—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
Holiday shopping ___be a tiring experience．There are so many places to visit and choices to make．
#63186
A
can
B
may
C
shall
D
will
—Must I return the book this week?— No, you ____. You can ____ it for 20 days.
#75821
A
mustn't: keep
B
needn't; borrow
C
needn't; keep
D
mustn't; borrow
He is ______ outstanding student from ______ university in America.
#77185
A
a; a
B
a; an
C
an; a
D
an; an