1、P(－3，－4)到x轴的距离是　　 ，到y轴的距离是　　　 ，

到原点的距离是　　 。关于y轴对称点的坐标是　　　　 。

7. I won’t go back ___ I reach the Great Wall.

6. I won’t believe that ___ I see it with my own eyes.

5.The book was so interesting that he read it for three hours ____ he knew it.

4.I’ll have to turn off the computer _____ my father comes home.

3. We should try to save the water ___ it is too late.

2. You will stay healthy ___ you do more exercises, such as running and walking.

1．___ you understand the rule, you will have no difficulty with it.

6．They have a very good time. ( 改感叹句)

用if, when, before, after, until等连词填空：

5． It’s an exciting week. ( 改感叹句)