问题

Why isn’t Cathy here yet— She _________ to be picked up at thestation.
A:could wait
B:must wait
C:might be waiting
D:can be waiting
B:must wait
C:might be waiting
D:can be waiting
正确答案是:
同类题型
We all consider _____ significant that we shouldcancel the order immediately
Jackie Chan was one of the most famous ___________ in the world.
.The problem, according to the experts, is ________ we should do with the salty land
_______environmental damage is done, it takes many years for the ecosystem to recover