—Look! A book is on the floor. Whose is it?—It ______be Rick's. It has his name on it.
#76529
A
mustn't
B
can't
C
must
D
need
推荐题目
“Where’s my book? I can’t find it”.“It _______ on your desk.”
#76205
A
may be
B
maybe
C
maybe is
D
may is
The Internet is really ________ to us. We can get a lot of things from it.
#74486
A
useful
B
difficult
C
different
D
safe
–Look at that girl! Is it Susan? --No, it _______ be her. She has gone back to her hometown.
#78308
A
mustn’t
B
can’t
C
needn’t
D
wouldn’t