10. ---- My baby has a heart trouble.　　　　　 ---- Did the doctor find it difficult ______ ?

　　 　A. in treating　　　　　 B. treating　　　　　　 C. for treating　　　　 D. to treat

9. ---- Where did he go?　　　　　　　　　　 ---- He went to another store ______.

　　 　　　 　A. to buy pencils　　　 B. for buying pencils　 C. buy pencils　 　　　　D. buying pencils

8. ---- Why was the official meeting called?　　　　 ---- ______ new officers.

　　 A. Select　　　　　　 B. Selecting　　　　　 C. To select　　　　　 D. For selecting

7. Because of air pollution being greatly reduced, this city is still ______.

　　 A. a good place which to be lived in　　　　　 B. lived as a good place

　　 C. a good place to live in　　　　　　　　　　 D. living in as a good place

6. ---- I didn't hear you come in last night.　　　　　 ---- That's good. We tried_____ noisy.

　　 A. not be　　　　　　 B. not to be　　　　　 C. to be not　　　　　 D. to not be

5. ---- I'll help you whenever you need me. 　　　　　　　 ---- Good. I'd like _____me tomorrow.

　　 A. you helping 　 B. that you will help　 C. you to help　　　　 D. that you help

4. ---- Have you enjoyed your visit here?　　　　　　　　　 ---- Yes, I'll be very sorry______ .

　　 A. for leaving　　　　 B.of leaving　　　　　 C. to leave　　　　　　 D. with leaving

3. I ran too fast ______ where I was going.

　　 A. to notice　　　　 B. for me to notice　　 C. to notice for me 　　　 　D. and notice

2. Paul said, "Give me a chair _____."

　　 A. to sit　　　　　　 B. sit　　　　　　 C. sit on　　　　　　　 D. to sit on

1. ---- Can you ride a horse?　　　　　　　　 ---- No, I never had the chance ____.

　　 A. for learning it　　　 B. for learning how　 C. how to learn it　　 D. to learn how