1.This key ____ be Peters. His is still in the lock.
A.may not
B.can t
C.mustnt
D.neednt
2.Its cold outside. Youd better ____ your coal.
A.not to take off
B.not take off
C.to not take off
D.dont take off
3. ____ I take the newspaper away?
----No, you mustnt. You ____ read it only here.
A.Must; can
B.May; can
C.Need; must
D.Must; must
4. ____ you like some more tea， sir?
----No, thanks.
A.Would
B.May
C.Must
D.Shall
5.May I go now?
----No, you ____ . You ____ stay here.
A.needn has to
B.mustn have to
C.can must
D.needn must
6.Must I write all the words down now?
----No, you ____ .
A.mustnt
B.cant
C.wont
D.neednt
7.May I go out and play basketball now?
----No, you ____ finish your homework first.
A.must
B.can
C.may
D.need
8.You ____ worry about your son. He will get well soon.
A.neednt
B.cant
C.mustnt
9. ____ I come in， Mr Green?
----Yes, come in, please.
A.Must
B.May
C.Will
D.Need
10.He isnt in the school. I think he ____ be ill.
A.can
B.shall
C.must
11.Must I come here before eight oclock?No， you ____ .
A.cant
B.couldnt
C.mustnt
D.neednt
12.I havent brought my dictionary with me. ____ I use yours?
A.Must
B.Shall
C.May
D.Need
13.You cant swim， can you?
----____.
A.Yes， I cant
B.No， I cant
C.Yes， you can
D.No， I can
14.He can hardly see anything， ____ ?
A.cant he
B.could he
C.can he
D.couldnt he
15.____ to have your lunch with me this afternoon?
A.Would you like
B.If you like
C.Did you like
D.Are you like
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参考答案
1.B.cant在此表示不可能。 may not表示不可以，mustnt表示不准， neednt表示不必。
2.B.此题考查 had better的用法。 had better后接动词原形，表示最好(做)， had better的否定形式是had better not+动词原形。 take off作脱下(衣物)讲。
3.B.may和can在疑问句和陈述句中都可表示许可。
4.A.Would you like? 表示委婉的邀请或征询意见。 B、 C、 D 三个选项中的助动词不能与like搭配。
5.C.A项的两个各选内容却不对。B项的错误是第一句虽然可用 mustnt，但第二空不能用 have to(表客观需要)。
6.D.
7.A.B方先说不行(No)，后面就是命令式的言辞，(must)，而不是说可以(may)做什么了。
8.A.后一句说他很快就康复了，还可推测出前一句应是不必着急。
9.B.在一般词句中用May表示请求。
10.C.must 是此处表示猜测，意为一定是。
11.D.must的古定回答用 neednt.
12.C
13.B.在用Yes/No的答语中，前后的肯、否定形式必须一致。
14.C
15.A