13.　 Please call me _______ you need my help.

12.　 My little cousin can _________ read ________ write.

11.　 She got a　 “C” in English test, ________ she had tried his best.

10.　 Put on your coat, ________ you will catch cold.

9.　　　 There are a lot of stories about the UFOs, _______ no one knows whether they are true or not.

8.　　　 Take some medicine, ________ you will feel better.

7.　　　 Come here early, ________ you can’t see him.

6.　　　 He has a lot of money, ________ he spends little.

5.　　　 A customer came in, ________ I stopped my work.

4.　　　 She felt hungry, ________ she didn’t have breakfast.