问题

You _____ across the road without looking round; you _____ down by a car.
A:shouldn’t run, might have been knocked
B:shouldn’t have run, might have been knocked
C:mustn’t run, could have been knocked
D:mustn’t have run, could be knocked
B:shouldn’t have run, might have been knocked
C:mustn’t run, could have been knocked
D:mustn’t have run, could be knocked
正确答案是: