题目内容：

判断下列从句类型

1.If there is a good play on BBC 2, I switch over and watch it.

2.I look at some documents so that I can be ready for the next day’s work.

3.That is what people call the underground in London.

4.It’s so crowded that I can’t find anywhere to sit.

5.This is the same pen as I lost yesterday.