按要求完成单词。
【小题1】centimeter（缩写形式）__________
【小题2】read (过去式）_________
【小题3】ate（原形）__________
【小题4】well(比较级) ___________
【小题5】buy (过去式) _________

Nowadays pollution is than before. （    ）

A．serious

B．seriously

C．more serious

D．more seriously

用所给词的适当形式填空。
1. In summer, the days get _________ (long)and the nights get shorter.
2. The poor children got back to school________ (with) the help of the kind people.
3. My parents are busy___________ (prepare) for my birthday.
4. We are going to fly kites on a__________ (wind) day.
5. When wind and rain come, don’t forget_________ (close) all the doors and windows.
6. It’s the best time _________ (play) football outside now.
7. Today is much _________ (cold) than yesterday.
8. It’s________ (excited) for me to pass the driving test.

Singapore Flyer is the world’s ______ flyer. (   )

A．largest

B．larger

C．large

The boy is ______ than his brother. (   )

A．short

B．heavy

C．heavier