If you ________ smoke in the room, please keep the windows open.
#63062
A
should
B
may
C
shall
D
must
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I will come _____ I don’t change my mind. 
#75176
A
unless
B
if
C
because
D
though
 It doesn’t look like rain, so you        bring your umbrella with you.
#78269
A
shouldn’t
B
wouldn’t
C
can’t
D
needn’t
 He ________ to the cinema last night, for he stayed with me.
#62699
A
mustn’t go
B
shouldn’t have gone
C
could not go
D
couldn’t have gone