1. Thank you very much for              (help) me so much.
2. When I             (walk) in the street, I             (meet) him.
3. Liu Hua             (buy) a grammer book yesterday.
4. His son             (study) English in England last year.
5. Can you finish             (do) your homework at 10?
6. They             (go) out for a walk if it doesn't rain.
7. He             (say) he will go to Beijing.
8. They             (do) their lesson this time yesterday.
9. Mr Smith wanted             (have) his holiday in London.
10. He             (not watch) TV every day.