用括号中所给的连词，把两个简单句连成一个复合句：

He has worked in the factory. The factory opened in 1991. (since)

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用括号中所给的连词，把两个简单句连成一个复合句：

The stars look small. They are much farther away. (because)

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用括号中所给的连词，把两个简单句连成一个复合句：

We will go to the park tomorrow. It is sunny. (if)

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用括号中所给的连词，把两个简单句连成一个复合句：

I will give you a call. I get to Beijing. (as soon as)

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It won't rain tomorrow. He will go to the park.(合为条件状语从句)

I don't know what I shall do next.(改为简单句)

A：Do you have to see a doctor? Can you tell me?

A：Where does he live?

B：Do you know?(合并为一句)

A：He is an English teacher．

B：He said．(合并为一句)

句型转换：

　　Sasha's brother had no time to travel to Thailand. So Sasha did.

　　Sasha travelled to Thailand ________ ________ her brother.