1. Your aunt, (which/ who/ which/ that) answered my phone told me you were out.
2. It’s nice (in/ at/ on /of) you to say so.
3. Let me congratulate you (in/ on /to / at/) your good result.
4. You: Well done , Lan
Lan: (O.K/ That’s a good idea/ That’s very kind of you/ Of course).
5. The man and the elephant (who/ which / whom/ that) you saw on TV last night are from Africa.
6. She turned (on/ up/ down/ up) the TV to see a cartoon.
7. Do you know the man (who/ which/ whom/ that) you met yesterday.
8. Last night we came home early (because/ although/ since/ but) the traffic was terrible.
9. Tet is a festival which occurs in late January or early February. (begins / happens/ carries/ begins).
10. I understand your idea. (Although/ Therefore/ However/ Because), I don’t agree with you.