The police still haven’t found her, but they’re doing all they      .
#75566
A
will
B
can
C
may
D
must
推荐题目
This book _______ Lucy’s . Look! Her name is on the book cover(封面).
#77222
A
must be
B
may be
C
can’t be
D
mustn’t be
-May we start the meeting now?-No, we________ . We__________ to start until the manager comes.
#76883
A
mustn’t; are allowed
B
don’t have to; are supposed
C
needn’t; aren’t allowed
D
can’t; aren’t supposed