1. The light is still on, so he _____ be at home.A. must

　　B. might

　　C. could

　　D. can't

　　2. My brother doesn't like the volleyball, so the volleyball _____ be his.

　　A. must

　　B. might

　　C. can't

　　D. could

　　3. The guitar _____ be your sister's. Only she in your family plays the guitar.

　　A. must

　　B. might

　　C. could

　　D. can't

　　4. The red CD player _____ Jim. He likes CD very much.

　　A. must belong to

　　B. can belong with

　　C. might belong on

　　D. must belong from

　　5. My mother _____ in your school, because she has gone to America already.

　　A. must be

　　B. can't be

　　C. should be

　　D. may be

　　6. It is usually warm in my hometown in March, but it _____ be rather cold

　　sometimes.

　　A. must

　　B. canC. should

　　D. would

　　7. You _____ play with fire, it is very dangerous.

　　A. needn't

　　B. may not

　　C. mustn't

　　D. wouldn't

　　8. Your parents say that you _____ watch TV all the evening if you wish.

　　A. may

　　B. must

　　C. can

　　D. might

　　9. You _____ careful with the fire when you have a picnic in the forest. It's too

　　dangerous.

　　A. will be

　　B. must be

　　C. can be

　　D. may be

　　Your father often _____ English in his _____.

　　A. study; study

　　B. studies; studies

　　C. study; studies

　　D. studies; study

　　【答案】

　　1. A 在肯定句中表示把握性比較大的推測用must be(想必是)。

　　2. C 在否定句中表示把握性比較大的推測用can't be(不可能)。

　　3. A 從后面句子的情景判斷“想必是她的”，在肯定句中表示把握性比較大的推測用must be。

　　4. A 從后面的句子“他非常喜歡CD”可以判斷用must belong to表示“想必是屬于他的”。

　　5. B 從后面句子的情景判斷“不可能在你們學(xué)校”，在否定句中用can't be表示“不可能”。

　　6. B can表示肯定的推測。

　　7. C 用mustn't表示“不準(zhǔn)，禁止”。

　　8. A may表示“許可”。9. B 此處must表示“必須”，must be careful表示“必須小心”。

　　9. B 此處must表示“必須”，must be careful表示“必須小心”。

　　10.D study既可以是動詞也可以是名詞，從本句判斷第一空用動詞表示“學(xué)習(xí)，研究”，根據(jù)主語用第三人稱單數(shù);第二空是名詞，表示“書房”。