Wouldn’t it be ____ wonderful world if all nations lived in ____ peace with one another?

How about your last weekend,Jim? —Quite meaningless.I ______my parents do the cleaning the whole day.

I don’t doubt ______ he will pass the tomorrow’s exam.

You are late again. The class _________ for five minutes.—Sorry. There’s something wrong with my bike.

Echo for half a month. She’ll come back in two months.