He commanded that the students ______the classroom before he returned.
#86770
A
didn’t leave
B
wouldn’t leave
C
not leave
D
couldn’t leave
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We _____ for her because she never came.
#90213
A
mustn’t have waited
B
shouldn’t have waited
C
mustn’t wait
D
needn’t wait
If it __________for the snow, we ___________the mountain yesterday.
#86962
A
were not; could have climbed
B
were not; could climb
C
had not been; could have climbed
D
had not been; could climb