I’m always afraid of giving a speech in front of the class. —____ You can do it well.

(2013·安徽，31)If parents have children help with housework, the children will feel needed.________，they will learn to take care of themselves

uld be foolish totheoffer. At that price, it’s dirt cheap.

The population of the world in the 21th century became much _____ than that in the 20th.—Yeah， and over eighteen percent of population in the world_________ Chinese.

Tom wants to be another Obama after he graduates from school. —That sounds great, but how can he ____ a person like him if he goes on like this?[ ]