摘要：31．Gao Mei be at home．I saw her in the street just now． A．can't B．mustn't C．might D．may
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—Tom must be at home because the light in his house is on.
—He ____ be at home, because I saw him playing basketball on the playground.
A. must B. can’t C. mustn’t
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用所给动词的适当形式填空。
1. Look, they _______ (play) games on the playground.
2. Listen, who ________ (sing) in the next room?
3. — Why ______ (be) he very happy now?
— Because his mother gave him a present.
4. — Where _______ (be) you yesterday afternoon?
— I _______ (be) at home.
5. I _______ ( not do) my homework yesterday afternoon. I _______ (watch) TV.
6. — Who _______ (come) to see you last Sunday?
— My uncle _______ (do).
7. — _______ you _______ (play) football with your friends yesterday morning?
— Yes, I _______ (do).
8. _______ (go) and see who is in that room.
9. _______ (not play) in the street. It's dangerous.
10. _______ (be) there any ink in that bottle?
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2. Listen, who ________ (sing) in the next room?
3. — Why ______ (be) he very happy now?
— Because his mother gave him a present.
4. — Where _______ (be) you yesterday afternoon?
— I _______ (be) at home.
5. I _______ ( not do) my homework yesterday afternoon. I _______ (watch) TV.
6. — Who _______ (come) to see you last Sunday?
— My uncle _______ (do).
7. — _______ you _______ (play) football with your friends yesterday morning?
— Yes, I _______ (do).
8. _______ (go) and see who is in that room.
9. _______ (not play) in the street. It's dangerous.
10. _______ (be) there any ink in that bottle?