Those who failed to get into the art exhibition ________ disappointed as many of the artists who should have appeared did not come. 
#63148
A
didn’t need feel
B
needn’t have felt
C
mustn’t have felt
D
couldn’t have felt
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---Where is my pen?--- I _____it.
#63405
A
might lose
B
wouldn’t have lost
C
should have lost
D
must have lost
She ______ know the answer, but I’m not sure.
#75276
A
maybe
B
may be
C
may
D
must