nt years, _____ problem of global warming has been very serious—That’s right People are facing ____ number of natural disasters now

He states that good qualities such as honesty and self-discipline make ____he is today.

The room, although_________ to be kept locked, was often left open.

May I have a picnic with my friends this afternoon—-I’m afraid not. _______ you have finished your homework.

Show us around the room ___ Premier Zhou once worked, will you?