6. to give it up → give it up, why not其后接不帶to的不定式。

5. I do → I have.

4. how → what， what作引導(dǎo)詞， 同時(shí)作they can do中動(dòng)詞do的賓語(yǔ)。

3. What → How, what修飾名詞， 而how修飾形容詞、 副詞， 用于感嘆句。

2. of those → of which, those不是關(guān)系代詞， 不可引導(dǎo)定語(yǔ)從句。

1. which → where， to live → to live in， live是不及物動(dòng)詞。

10. -Who you think is the richest man in this town?

　 　 　-I think Mr. Kim is.

　　 注 釋

9. -Those shirts are very expensive.

　 -Do you know how they cost?

8. Someone is at the door. Who is he?

7. These photos will show you how our village looks like.