It's ____________fifty metres. （   ）

A．on

B．from

C．more than

Shanghai is __________ in China. (   )

A．big cities

B．the biggest city

C．biggest cities

判断下列句子是否正确，对的写“T”，错的写“F”，并将错误的地方找出来，并改正。
【小题1】A sperm whale is shorter than a killer whale in its length. （_______）________
【小题2】How taller are you? （_______）____________
【小题3】How long are your legs? （_______）____________
【小题4】I’m thin than you. （_______）____________
【小题5】I’m bigger and strong than you. （_______）____________

People want to make the country ____.（  ）

A．green

B．dark

C．greener

D．polluted

填空题
1. grow的现在分词是______.   2. we will的缩写形式是_______.
3. pea的复数形式是_______.   4. say的过去式是_______.
5. two的序数词是_______. 6. big的比较级是_______.
7. one by one的意思是_______.  8. It must be _______ （强壮的）.