用所给动词的适当形式填空。

1. By the end of last year, the famous writer _____ (write) 20 books.

2. When we _____ (get) to the cinema, the film _____ (on) for half an hour.

3. Before he _____ (come) here, he _____ (live) in Britain for ten years.

4. By the time I _____ (arrive), she _____ (leave).

5. I _____ (learn) a lot of English songs before I _____ (be) ten.

EQB601－C型汽油泵由（）、外摇臂、内摇臂、手摇臂等组成。

A.上体

B.下体

C.泵膜

D.泵盖