用who，whose，which或that填空。

1. A clock is a machine ________ tells people the time.

2. The panda is a kind of animal ________ can be found only in China.

3. April 1st is the day ________ is called Fool's Day in the West.

4. Where is the woman ________ watch was stolen yesterday?

5. The woman ________ you visited last week is a famous writer.

把下列简单句改为定语从句，每空一词。

1. I'll never forget the farm. I visited it in 2003.

I'll never forget the farm ________ ________ ________ in 2003.

2. The building is a middle school. It stands near the post office.

The building ________ ________ near the post office ________ a middle school.

3. The man teaches us English. He comes from Hainan.

The man ________ ________ ________ ________ comes from Hainan.

4. The book is interesting. You lent it to me yesterday.

The book ________ ________ ________ ________ ________ yesterday is interesting.

5. My grandfather doesn't like these songs. These songs are too long.

       My grandfather doesn't like these songs ________ ________ too long.