I had _____useful umbrella when it rained.
A. a B. an C.\ D. the
难度: 中等查看答案及解析
—What is he going to ______ when he ______ up?
—He’s going to be a doctor.
A.do, grow B.does, grows
C.be, grow D.be, grows
难度: 困难查看答案及解析
—Will you buy the white watch or the red one ?
----I’ll take_____.One is for my mother and the other is for my sister.
A.both B.either C.all D.each
难度: 中等查看答案及解析
----How terrible the air is!
Yes,if there are ___trees, there will be ___air pollution in our city.
A. less more B. more less
C. less less D. more more
难度: 简单查看答案及解析