Sometimes most of us probably are angry ______ our friends, parents or teachers. [ ]

The plane will take off _________ three hours. I must get to the airport right now.[ ]

.We don’t have to feel curious about him. Actually he leads _______ we ordinary people do.

Jet Li to Guangzhou for charity . He’ll come back in two days.

If any accident ______ here tomorrow, it will be very serious.