1. This novel, who I bought last week, is very interesting.
=> which
2. Last summer I have stayed on my uncle’s farm for two weeks.
=> stayed
3. Einstein who failed his university entrance exam discovered relativity.
=> đúng mà
4. Lake Superior, that lies on the US Canadian border, is the largest lake in North America.
=> which
5. If I don’t practice my golf, I’ll get any better.
=> won't
6. The people whose we talked to were very friendly.
=> whom
7. She bought a house last year but she didn’t sell her old house yet.
=> hasn't sold
8. This car used to paint white.
=> used to be painted
9. I’m late, am I?
=> aren't I
10. The river, that flows across my village, is very beautiful.
=> which
11. He asked how much did those books cost.
=> those book costed
12. He didn’t expect to invite to her party.
=> to be invited
13. Would you please stop to make so much noise.
=> making
14. He has the habit of driving so fastly.
=> fast
15. Mel Gibson, whom played Hamlet, is one of my favorite actors.
=> who
16. The boy was not old to stay at home alone.
=> young enough