1. It's very kind of you_______ so. a. say b. to say c. saying d. to be saying 2. Please show me how_______ this. a. do b. to do c. doing d. to have done 3. One is never too old_______ a. learning b. learn c. to have learned d. to learn 4. You are old enough_______ out alone. a. going b. go c. to go d. to have gone 5. I'm very glad_______ you. a. to meet b. meet c. meeting d. to be meeting 6. It's nice_______ you. a. to know b. know c. knowing d. to be knowing 7. You have no right_______ my daughter. a. see b. to see c. seeing d. to have seen 8. Please tell me what_______ a. doing b. do c. to do d. to have done 9. I forbid you _______ my letter. a. to read b. read c. to have read d. reading 10. We stopped_______ hello to her. a. say b. saying b. to have said d. to say 11. We came_______ help her. a. help b. to help c. to have helped d. helping 12. I'll invite her_______ my daughter. a. teaching b. teach c. to teach d. to have taught 13. I don’t feel like_______ to the cinema now. a. go b. going c. to go d. to have gone 14. It's no good_______ video games. a. play b. to have played c. to play d. playing 15. It's no use_______ with him. a. working b. work c. to work d. to have worked 16. The idea of_______ abroad appeals to me. a. working b. work c. to work d. being working 17. The Rogers are happy about_______ a baby. a. have b. having c. to have d. to be having 18. Camping is hard if you're not used to _______ on the ground. a. be slept b. to be sleeping c. sleeping d. sleeping 19. Mrs. Kerry didn’t want_______ on a. to be operated b. being operated c. to operate d. to be operating 20. Windows are used to let in light and _______ out cold. a. to keep b. keep c. keeping d. for keeping