状语从句：条件、让步和对比
一、选择适当的连接词，完成下列句子。
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on condition that, whenever, as, as long as,
unless, while, although, if, no matter how, in case
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1. I know the money is safe, I shall not worry about it.
2. You must keep on working in the evening, you are sure you can finish the task in time.
3. Much to my surprise, she agreed, we had separate rooms and made our own travel arrangements.
4. We will have no water to drink we don’t protect the earth.
5. That region has plenty of natural resources this one has none.
6. we gave him something to eat, he would save it up for hi s little sister.
7. Much she disliked going to the program You Are the One, she knew she had to be there or her mother would be unhappy.
8. regular exercise is very important, it’s never a good idea to exercise too close to bedtime.
9. he arrives before I get back, please ask him to wait.
