4. I will never forget the day on that we went to buy guitars in the guitar store.

5. When you read the book, you'd better make a mark that you have a question.

6. On the third floor there are two rooms, one of them is used as a meeting room.

7. The couple will fly to France for their honeymoon on their first stop, which they plan to stay for three days.

8. I gave that boy so difficult a math problem which he couldn't work out.

III. 根据汉语提示完成句子。

1. We were talking about the persons and things _______________(我们记得的) in our school.

2. That is the only way _______________________________(通向你成功的).

3. It rained hard yesterday, ______________________________ (这阻止了我去公园).

4. The wolves hid themselves in the places ______________________ (猎人找不到的).

5. I have bought the same dress _______________________ (她正穿着的).

6. He has lost the key to the drawer _________________________(试卷在里面保存的).

7. He has two sons, ___________________(他们俩都) work as chemists.

8. He is a man of great experience, __________________ (从他那里) much can be learned.

9. I have many books, ________________________ (其中一些) are on the universe.

10. The hotel __________________ (我们住过的) during our holidays stands by the seaside.

IV. 语篇填空(用适当的关系词或"介词＋关系词"完成下列短文)

　　Do you know the man 1.____________ wrote this book? He was Jason, one of the engineers 2._________ came from Russia in the 1950s.He worked in the same factory 3.____________ my father once worked. When he came to China, the first thing 4.____________ he did was to visit the factory 5.__________________ did research on trolleybuses and found out the reason 6. ____________ China was so backward in it. Then he spent every minute 7.____________ he could spare to help China develop transportation.8.__________ is mentioned above, Jason was a foreigner 9.___________________ made great contributions to our country and was a kind man 10.____________________ we should say thanks.