1. What **did** you **do** yesterday? I **did** the washing up.
2. What kind of research was he **doing** in the laboratory?
3. The President **is making** a very important speech on TV tonight.
4. The children **are making** too much noise. I can't work.
5. She asked us to sit down, and then went to **make** some tea.
6. So far they **have made** preparations for Tet.
7. It's a great pleasure to **make** conversation with Julia.
8. You should **make** an effort to **do** your duty.
9. Tom **made** much progress in his study last month.
10. Where **does** your sister often **do** her hair?
11. Joe sold his old Ford and **made** a profit of $60.
12. Come on, Jane! We've been waiting 20 minutes. Please **make** a decision.
13. Albert is always afraid of **making** mistakes when he speaks English.
14. Next summer we'd like to **do** an Italian course in French.
15. Don't worry about your driving test. Just get in the car and **do** your best.
16. In Britain, young men don't have to **do** military service.
17. Our company **has done** most of its business with Europe recently.
18. Do you mind waiting five minutes? I have to **make** a quick telephone call.
19. I wish this house could clean itself. I hate **doing** the housework.