1. We agree to accept _________ they thought was the best tourist guide.

　　A. whatever

　　B. whomever

　　C. whichever

　　D. whoever

　　2. Although many people view conflict as bad, conflict is sometimes useful _________ it forces people to test the relative merits of their attitudes and behaviors.

　　A. by which

　　B. so that

　　C. in that

　　D. provided that

　　3.A beam of light will not bend round corners unless _________ to do so with the help of a reflecting device.

　　A. made

　　B. being made

　　C. having made

　　D. to be made

　　4.A knock at the door again! It was the third time someone _________ me that evening.

　　A.has interrupted

　　B. had interrupted

　　C.to have interrupted

　　D. would have interrupted

　　5. The government agrees to install services _________ by residents over a ten-year period.

　　A. which are to be paid for

　　B. for which to be paid

　　C. which to be paid for

　　D. to be paid for which

　　【答案及解析】：

　　1. Dwhoever引導(dǎo)名詞性從句，并在從句中做主語(yǔ)，用來(lái)指人。they thought 是插入成分。

　　2. Cin that“是因?yàn)椤�，引�?dǎo)原因狀語(yǔ)從句，符合句意。by which表示手段;so that引導(dǎo)目的狀語(yǔ)從句;provided that引導(dǎo)條件狀語(yǔ)從句。

　　3.Amade to do so是it is made to do so 的省略形式。unless是連詞，應(yīng)連接句子，所以除A以外的其他幾個(gè)選項(xiàng)都是錯(cuò)誤的。

　　4.B此處用過(guò)去完成時(shí)，是因?yàn)楸揪湟庵浮暗侥谴吻瞄T(mén)，已經(jīng)是第三次有人打攪我了”。句中用詞was和that evening都說(shuō)明指過(guò)去發(fā)生的事，到過(guò)去某一時(shí)刻為止已出現(xiàn)的情況用過(guò)去完成時(shí)。

　　5.Awhich在句中是關(guān)系代詞，要引導(dǎo)一個(gè)句子，而B(niǎo)、C、D三個(gè)選項(xiàng)中都沒(méi)有謂語(yǔ)，因此不是句子。本句意為：“政府同意提供服務(wù)設(shè)施，經(jīng)費(fèi)由居民在十年期間償還�！�