8、________ everyone is here, let’s begin our meeting.

7、It is so dark outside ________ it is raining.

6、Please wait here ________ I come back.

5、I’ll be more careful ________ what you have said.

4、________ I was writing letters last night, he was watching TV.

3、The students sang ________ they went along.

2、I was doing my homework ________ suddenly a dog came in.

1、He asked me another question ________ I could answer the first one.

10、He walks so quickly that I can’t catch up with him. (改为简单句)

9、He left the classroom latest yesterday. (用比较级改写，意思不变)