1、—What do you want to be when you grow up?
—I want to be _________social worker. Many people are in great need of our help.
A. a B. an C. the D.不填
2、I think _________ can make Andy change his mind. He is such a person who never gives up easily.
A. something B. anything C. nothing D. everything
3、—Could you tell me how to remember new words quickly?
—Yes，I think a __________ tree can help you a lot.
A. grammar B. equation C. punctuation D. vocabulary
