16.Will you come to see the film with me?
----____.
A.No， I dont
B.sorry， I cant
C.Yes， I am
D.Yes， I wasnt
17.I ____ keep the book a little longer?
----Yes, you can.
A.Must
B.Need
C.Can
D.Should
18. ____ I watch TV this evening， Mum?
----Yes, you ____ .
A.May; may
B.must; can
C.Must; may
D.Need; need
19.Mike must work harder at his lessons， ____ ?
A.neednt he
B.mustnt he
C.doesnt he
D.isnt he
20.May I go now?
----No, you ____ , You ____ stay here.
A.needn here to
B.neednt must
C.mustn have to
D.needn has do
21.Tom ____ it if he doesnt want to.
A.doesnt need to
B.need not to do
C.needs not to do
D.need not do
22.Put on more clothes. You ____ be feeling cold with only a shirt on.
A.can
B.could
C.would
D.must
23.May I keep the book for two weeks?
----No, you ____ .
A.cant
B.may not
C.mustnt
D.might not
24.____ take the man upstairs?
A.Had I better not
B.Had I not better
C.Hadnt I better to
D.Did I have better not
25.Must I return the book this morning?
----No, you ____ . But you ____ return it before supper.
A.neednt， must
B.mustnt， can
C.mustnt may
D.cant. need
26. ____ I get up at five oclock tomorrow morning?
----No, you ____ .
A.Must， cant
B.Cant， can
C.Must， neednt
D.Must， shouldnt
27.Its quite early. We ____ worry about the time.
A.mustnt
B.may not
C.neednt
D.cant
28.May I go swimming now?
----No, you ____ .
A.mustnt
B.may not
C.couldnt
D.neednt
29.The traffic ____ stop when the lights are red.
A.must
B.mustnt
C.may
D.cant
30.You ____ never play in the street. Its not safe.
A.can
B.may
C.must
D.need
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参考答案
16.B
17.C
18.A.may开头的问句的肯定答语仍用 may.
19.A.主句中的must表必须，故附加部分用neednt.
20.C
21.D.注意 need做情态动词可用于疑问和否定句，其构成分别为 Need sb. (do)?和 sb. neednt(do) need无人称变化。做实意动词时，构成Do(Does) sb. need to (do)?和sb. dont(doesnt)need to(do)
22.D.must+be+动词-ing形式是情态动词的现在进行时形式，意为现在一定(正在)。
23.C.
24.A.had better的疑问句是把 had放到主语之前，否定句是在better后加not.
25.A.neednt(不必)与must(必须)相对应。
26.C.道理同上题。
27.C.根据前一句提示可知。
28.A 29.A 30.C