Ⅰ. 用适当的关系词填空
1. I will never forget the days that/which we spent together.
2. I will never forget the days when we stayed together.
3. The reason that/which he explained at the meeting was not sound.
4. The reason why he was happy was that he had been praised by the teacher.
5. Keep the book in a place where you can find it easily.
6. This is the house that/which was built by my grandfather forty years ago.
7. I will show you the point where you fail.
8. There are some cases where this rule does not hold good.
9. He had to face the conditions where pressure was heavy.
10. He is the man whom/that I saw yesterday.
