I. Choose the best answer to complete each of the sentences/Or identify the underlined part that needs correction:1. I saw him __________off. A. to drive B. drive C. driven D. drove 2. You’d better ____________ an umbrella .A. take B. to take C. taking D. to be taken 3. Would you mind if I _____________ the window? A. to open B. opened C. openingD. open 4. Wouldn’t you rather _____________? A. succeed B. to succeed C. succeedingD. succeeded 5. He made me __________it all over again. A. done B. do C. to do D. doing 6. I had the boy ___________ a letter yesterday. A. posting B. to post C. post D. posted 7. You must _____________ a lot of people. A. to know B. know C. knowingD. known 8. My father doesn’t let me _____________ out at night. A. going B. to go C. go D. gone 9. We heard him __________________ downstairs. A. ran B. to be run C. to runD. run 10. Let’s ____________ an English song. A. singing B. sing C. to sing D. sang