—Show me your permit, please.—Oh, it's not in my pocket. It ________.
#62323
A
must have fallen out
B
might fall out
C
could fall out
D
should have fallen out
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We ________ the difficulty together, but why didn’t you tell me?
#63106
A
should face
B
might face
C
could nave faced
D
must have faced
Today’s work ____ today. Never leave it till tomorrow.
#78180
A
must do
B
must be done.
C
may be done
D
may do