By the time I got to the airport, the plane          .  

用所给动词的适当形式填空。
1. When I returned home, he _____ (leave).
2. By ten yesterday evening, she    __    (finish) writing.
3. He     _     (study) English for five years before he came here.
4. It     __   (stop) raining when l woke up this morning.
5. I   __     (not read) the book because I had read it before.

By the time of last year,  she          the piano for five years.          

I    __   already   __    my homework by 9:30 last night.    

By the time Jane got home, her aunt _____ for London to attend a meeting.

They ______ about eight hundred English words by the end of last term.

The teacher ____ the office for a few minutes when we arrived. We didn't meet him.

—Why didn't you give the wallet to the man at once?     
—He _____ before I realized it was his .      

—Did you see Tom at the party ?
—No, he _____ by the time I got there .      

The film _____ for ten minutes when I got to the cinema .