9. The little girl travelled from London to New York by _________.

8. Mr White _________ is cooking supper in the kitchen.

7. My friends and I enjoyed _________ at the English party last night.

6. The cat in the mirror is _________.

5. “What should I do?” Dick said to _________.

4. The two friends talked as they walked. Suddenly they found _________ near the school gate.

3. Your little sister is too young to look after _________.

2. “Help _________ to some fish,” Mr Green said to Li Lei.

1. “Can you work out this maths problem by _________?” the teacher asked the students.

5. He ran out______ I could stop him.

A. when 　　　　　　　　　 B. if 　　　　　　　　　　　 C. before　　　　　　　　 D. since