请用正确的适当时态填空

　　　　1. what ________you (buy) yesterday morning?

　　　　2. Up till now, he never_________(lend)me anything.

　　　　3. __________you (burn)those old papers yet?

　　　　4. He ________(fight)in Flanders in the First World War.

　　　　5. We just__________(win)the match.

　　　　6. As my father_______(leave)the house, the postman ________(arrive)

　　　　7. Tom _________(work)in the garden while I ________(sit) in the sun.

　　　　8. As I _________(walk)down the street, I ________(meet)Mary.

　　　　9 While he ________(read)the letter, he __________(hear)a knock at the door.

　　　　10. He ________(throw) a litter when I spoke to him.