完形填空。 Tom __ 1 __ a very good student, and he __ 2 __ doing homework, because he liked __ 3 __ other things in his free time. Usually he didn’t do __ 4 __ homework, and when he did it, he always made __ 5 __ mistakes. Then one day, his maths teacher looked __ 6 __ Tom’s homework and found that he had done __ 7 __ right. He was very happy and very surprised. He asked Tom to his desk and __ 8 __ to him, 'You have done all your homework right this time, Tom. __ 9 __ your father help you?' Usually Tom’s father did help him with his homework, but this time he didn’t, because he was not at home. Tom answered, 'No, sir. He was busy last night, so I had to do it all _ 10 __ myself.' (      )1. A. am not (      )2. A. doesn’t (      )3. A. do (      )4. A. his (      )5. A. a lot (      )6. A. up (      )7. A. all his homeworks (      )8. A. say (      )9. A. Did (      )10. A. to B. was not B. don’t like B. does B. him B. much B. at B. all homeworks B. says B. did B. by C. were not C. didn’t like C. did C. he C. any C. after C. all his homework C. said C. Was C. for D. are not D. didn’t D. to do D. her D. a lot of D. for D. all the homework D. saying D. Were D. at