⑴how tall are you？____

⑵what did you do last Monday？____

⑶what are they going to buy？____

⑷how heavy are you？____

⑸where did you go the day before yesterday？____

A. I did my homework and read books.

B. I'm 55 kilograms.

C. I'm 1.66 metres.

D. I went to the theater the day before yesterday.

E. They are going to buy some foods and fruits.

我们学习了O₂、CO₂、H₂这三种气体的性质．某小组同学用图所示装置成功干燥并收集了某纯净气体，甲、乙、丙三位同学对该气体的组成有不同的认识，甲认为可能是O₂，乙认为可能是CO₂，丙认为可能是H₂．你认为他们之中____推测是正确的，并说明理由____．

庄子，名____，____中期____国人，他继承并发展了____的思想，为____学派的重要代表人物。

Hurry up, Mike. You must get to the airport an hour before the plane________.