help me 6. Ann was very surprised to find the door unlocked. She remembered ___it before she left. a. to lock b. locking c. lock d. locks 7. I regret __________ that the sight-seeing tour has been cancelled because of the bad weather. a. to tell you b. telling you c. to say you d. saying you 8. Having finished __________ the reading report, I began to listen to music. a. to write b. to have written c. writing d. written 9. Don’t risk __________ alone in the river. a. to swim b. to swimming c. swimming d. swim 10. I’m considering ____________ your invitation. a. accepting b. to accept c. accepted d. accept 11. The boy pretended __________ an assay, but in fact he wrote nothing. a. to write b. writing c. to be written d. to writing 12. I have never expected ____________ such a strange thing in my life. a. seeing b. having seen c. to see d. to be seen 13. The painting was beautiful. I stood there __________ it for a long time. a. for admiring b. being admired c. admire d. admiring 14. Jim should have asked for help instead of __________ to do it himself. a. trying b. to try c. try d. tried 15. The number of learners ______ not large. Therefore, a number of headphones ______ available to them in the lab. a. are/is b. is/are c. are/ are d. is/is 16. Anybody who ___________ my keys will be given a reward. a. find b. finds c. are finding d. found