1. Dear me! Just _____ at the time! I _____ no idea it was so late.

　　A. look, have                   B. looking, had

　　C. look, had                    D. looking, have

　　2. “What’s his name?” “I _____.”

　　A. forget                         B. forgot

　　C. had forgotten              D. am forgetting

　　3. Your mother _____, however, say that to us that day.

　　A. does              B. did          C. is doing          D. was doing

　　4. New medicines and instruments ______ every day to extend life.

　　A. develop                    B. are being developed

　　C. are developing               D. have developed

　　5. I _____ your last point — could you say it again?

　　A. didn’t quite catch             B. don’t quite catch

　　C. hadn’t quite caught            D. can’t quite catch

　　6. I feel sure I _____ her before somewhere.

　　A. was to meet              B. have met

　　C. had met                        D. would meet

　　7. They haven’t arrived yet but we _____ them at any moment.

　　A. are expected               B. have expected

　　C. are expecting               D. will expect

　　8. “I suppose you _____ that report yet?” “I finished it yesterday, as a matter of fact.”

　　A. didn’t finish               B. haven’t finished

　　C. hadn’t finished                   D. wasn’t finishing

　　1. C。第一空填 look, 因為這是祈使句的謂語；第二空填 had，因為前一句說“看看時間吧”，這一看當(dāng)然知道了現(xiàn)在很遲的情形，“不知道這么遲了”顯然應(yīng)是“過去”的事，故應(yīng)用一般過去時態(tài)。

　　2. A。從語境上看，“忘記”的時間應(yīng)是現(xiàn)在，即指現(xiàn)在不記得了。

　　3. B。其中的 did 為強(qiáng)調(diào)用法。

　　4. B。從語境上看，develop 不僅要用被動語態(tài)，而且要用進(jìn)行時態(tài)。

　　5. A。從下文的語境看，既然現(xiàn)在叫對方重復(fù)一遍，說明“沒聽清對方的最后一點”應(yīng)發(fā)生在過去（即說此話之前）。

　　6. B。before 用作副詞時不與具體時間連用，泛指“以前”，通常與一般過去時或現(xiàn)在完成時連用。

　　7. C。表示目前的一種狀態(tài)。

　　8. B，注意下文語境：事實上，我昨天就做完了。從該回答的語氣上推測，填空處應(yīng)填現(xiàn)在完成時態(tài)。

　9. “When he _____ is not known yet.” “But when he ____, he will be warmly welcomed.”

　　A. comes, comes                B. will come, will come

　　C. comes, will come             D. will come, comes

　　10. The bridge, which _____ 1688, needs repairing.

　　A. is dated from              B. was dated from

　　C. dates from                   D. dated from

　　11. I had hoped to see her off at the station, but I _____ too busy.

　　A. was                         B. had been

　　C. would be                          D. would have been

　　12. You _____ your turn so you’ll have to wait.

　　A. will miss                          B. have missed

　　C. are missing               D. had missed

　　13. I left my pen on the desk and now it’s gone; who _____ it?

　　A. took                      B. has taken

　　C. will take                        D. had taken

　　14. You’ll never guess who I met today — my old teacher! We _____ for 20 years.

　　A. don’t meet                B. haven’t met

　　C. hadn’t met                D. couldn’t meet

　　15. I think you must be mistaken about seeing him at the theatre; I’m sure he _____ abroad all week.

　　A. is                        B. was

　　C. has been                  D. had been

　　16. —Don’t put the waste on the ground.

　　—Oh, I’m very sorry. I _____the dustbin there.

　　A. don’t see                       B. isn’t seeing

　　C. didn’t see                       D. haven’t see

　　9. D。第一個 when 引導(dǎo)的是主語從句，用一般將來時表示將來；第二個 when引導(dǎo)的是時間狀語從句，用一般現(xiàn)在時表示將來。

　　10. C。因為 date from 的意思是“自某時起存在至今”(＝have existed since)，它通常用于一般現(xiàn)在時，而不用過去時態(tài)(盡管其后接的總是表示過去的時間)，除非所談?wù)摰臇|西現(xiàn)在已不復(fù)存在，如：The church, which dated from the 13th century, was destroyed in an earthquake two years ago (那座教堂是13世紀(jì)建成的，兩年前在一次地震中被毀了)。(注：與 date from 同義的 date back to 也有類似用法。)

　　11. A。前一句謂語用had hoped，表示的是過去未曾實現(xiàn)的想法或打算，可以譯為“本想”，而后一句說“我太忙”，這是陳述過去的一個事實，所以要用一般過去時。

　　12. B。用現(xiàn)在完成時表示結(jié)果，即你已經(jīng)錯過了機(jī)會，其結(jié)果是：你只能等。

　　13. B。用現(xiàn)在完成時表示影響或結(jié)果，即現(xiàn)在筆不見了，是由于某人已經(jīng)把它拿走了的結(jié)果。

　　14. B，用現(xiàn)在完成時表示從過去持續(xù)到現(xiàn)在的一段時間。

　　15. C，用現(xiàn)在完成時表示影響或結(jié)果，即他整個星期都在國外，所以你說你在劇院見過他，你一定是搞錯了。

　　16. C。指剛才對方提醒之前沒看到垃圾箱，用過去式。

　17. —How is the weather in your country this summer?

　　—It _____as much as it does now for a long time.

　　A. hasn’t rained                  B. doesn’t rain

　　C. wasn’t raining                D. didn’t rain

　　18. —Does Liu Hui serve in the army?

　　—No, but he _____in the army for three years.

　　A. served                                   B. has served

　　C. is serving                       D. would serve

　　19. —Sorry. I _____to post the letter for you.

　　—Never mind. _____it myself after school.

　　A. forget; I’d rather post           B. forgot; I’ll post

　　C. forgot; I’m going to post      D. forget; I’d better post

　　20. Unfortunately, when I dropped in, Professor Smith _____, so we only had time for a few words.

　　A. has just left                          B. had just left

　　C. just left                          D. was just leaving

　　21. —What were you doing when I phoned you last night?

　　—I _____my painting and was starting to take a bath.

　　A. have already finished             B. was finishing

　　C. had just finished                    D. was going to finish

　　22. You _____television. Why not do something more active?

　　A. always      watch                   B. are always watching

　　C. have always watched            D. have always been  watching

　　23. I have been studying computer for several years and I still _____.

　　A. have          B. do             C. have been        D. am

　　24. Jane was disappointed that most of the guests________ when she ________at the party.

　　A. left; had arrived            B. left; arrived

　　C. had left; had arrived         D. had left; arrived

　　25. The pen I ________ I ________ is on my desk, right under my nose.

　　A. think; lost                     B. thought; had lost

　　C. think; had lost              D. thought; have lost

　　17. A。由now和for a long time可知“很長時間都沒有像現(xiàn)在這樣下雨這么多”，用現(xiàn)在完成時。

　　18. A。由no是對前句的否定可知現(xiàn)在不在部隊服役，是以前“服過役”，故用一般過去時。

　　19. B。從語境看“忘記”應(yīng)為過去；“放學(xué)后自己去記”是臨時的決定，不能用表示計劃或打算的be going to。

　　20. D。從“我們只談了幾句話”可知，當(dāng)我們?nèi)グ菰L時，Professor Smith“正要”離開了，D是過去進(jìn)行時表示過去將來時。

　　21. C。由“我正要去洗澡”可知昨天你打電話時“我剛剛畫完”，“畫完”在“打電話前”之前，即過去的過去，故用過去完成時。

　　22. B。always有時可與進(jìn)行時態(tài)連用，但含有某些感情色彩，如報怨、厭惡、贊美等。此句表示的是報怨。

　　23. D。句意為“我已學(xué)電腦幾年了，我現(xiàn)在還在學(xué)。”am后省略了studying。

　　24. D. 在她arrived之前就已離開；即過去的過去，用had left.

　　25. B. 語境為：原以為(thought)丟了的（had lost）確在鼻子底下。