Mark     have hurried. After driving at top speed, he arrived half an hour early. 
#86678
A
needn’t
B
wouldn’t
C
mustn’t
D
couidn’t
推荐题目
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