—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
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— _______ I ask you something, if you are not busy?—Yes, of course you _______.
#62809
A
Should; should
B
Could; can
C
Could; could
D
Can; Could
I _____ have watched that movie --- it’ll give me horrible dreams.
#63539
A
couldn’t
B
needn’t
C
shouldn’t
D
mustn’t
It is impossible to please everyone. We can only do our best.
#77859
A
hear…of
B
make… happy
C
know… well
D
look… down