用括号内所给单词的适当形式填空。

1. We _____ (plant) some flowers in the garden last week.

2. A: I _____ (lose) my purse!

    B. Bad luck! When _____ you _____ (lose) it?

    A: I _____ (lose) it last night.

3. He _____ (come) back home, he _____ (watch) TV now.

4. David _____ (finish) his homework just now.

5. The monkeys are full, because we _____ (feed) them.