16. Excuse me for _____ in without ______.

　　　 A. coming, asking　　 B. coming, being asked　 C. to come, asking　 D. to come, being asked

15. Most of the students enjoy_____ stamps.

　　　 A. collect　　　　　　　 B. to collect　　　　　 C. collecting　　　　　 D. collected

14. We are looking forward to ______ another chance ______ it again.

　　　 A. be given, to try　　 B. give, to try　　　　 .C. giving, trying　　　 D. having, to try

13. You can keep the book until you ______ .

　　 A. have finished reading　　　　　　　　　　　 B. finish to read

　　 C. will finish reading　　　　　　　　　　　　 D. have finished to read

12. You'll regret ______ those words. You may hurt her feelings.

　　 A. say　　　 　　　　　B. to say　　　　　　　 C. having said　　　　 D. to have said

11. Though he failed, he tried _______ it again and again.

　　 A. to do　　　　　　　 B. doing　　　　　　 C. do　　　　　　　　 D. done.

10. You didn't hear us come back last night. That's good. We tried ______ noisy.

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

9. Remember ______ the book, when you have finished it.

　　 A. putting back　　 B. having put back　　 C. to put back　　　　 D. will put back

8. Some people's greatest pleasure is ______ .

　　 A. fishing　　　　　 B. to fish　　　　　　　 C. to be fish　　　　　 D. being fishing

7. It's very kind ______ you ______ say so.

　　 A. of, to　　　　　　　 B. for, to　　　　　　 C. to, to　　　　　　　 D. of, /