—______ I finish the work now?—No, you needn"t. You can do it later.[ ]A.

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—______ I finish the work now?
—No, you needn"t. You can do it later.[     ]
A. May
B. Can
C. Would
D. Must

答案

举一反三

A teacher ______ also make a mistake if he is not careful enough.[ ]
A. must
B. may
C. should
D. has to

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—I like the party so much, but I ______ go home. It"s too late.
—What a pity![     ]
A. mustn"t
B. have to
C. may
D. can"t

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—I don"t mind telling you what I know.
—You______, I"m not asking you for it.[      ]
A. needn"t
B. mustn"t
C. may not
D. can"t

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用mustn"t 或must完成句子。
1.Cars, buses and bikes ______ go when the traffic light is red.
2. The flowers______be watered every day, or it"ll die.
3. No matter who wants to come in,he ______ knock on the door first.
4. You must speak to the old politely, ______you?
5. The children ______swim in the lake. It"s not safe.
6. I haven"t seen Alice several years. She ______be a big girl.

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—Who is knocking at the door?
—It ______ be Miss Zhang. Because she has just gone to Japan.[ ]
A. mustn"t
B. can"t
C. may not
D. needn"t

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