牛刀小试：用适当的关系词填空。
The house _______ we live in is very big.
The boy ______ is wearing the black jacket is very clever.21cnjy.com
This is the present _____ he gave me for my birthday.
The man _______ talked to you just now is an engineer.
He talked about the teachers and schools _______ he had visited.
There is nothing in the world _______ can frighten him.
She wears a gold ring, _______ is very uncommon in our class.
We visited a factory _______ makes toys for children.
Is this the place _______ your father once lived?
I’ll never forget the days _______ I joined the League.

用关系代词或关系副词将下列每对句子连成一个复合句
The boy is my younger brother. He was here a minute ago.
The old man is a professor. He teaches chemistry in a college.
Beijing Hotel is near Tian An Men Square. The foreign visitors live there.
The woman is here now. You were talking about her.
This is the hall. We listened to the report in it the other day.
The car was going 90 miles an hour. The car just passed us.
The man waved to us. The man was my uncle.
I enjoyed reading the book. You gave me a book last week.
I prefer the subject. The subject is science.
I spoke to the man. The man is a professor.

---Does the teacher know everybody _______ planted the trees?·
---Yes, he does.

The letter _______ I received from him yesterday is very important.

---Where is the scientist ________ gave us the talk yesterday?
---He has gone back to Qinghua University.