摘要:Jimmy is very 1 at Math. Mary, his sister, doesn’t do well 2 it. Jimmy often helps her with math. One night, Jimmy and Mary take out their exercise-books and begin 3 their lessons. Soon Jimmy finishes 4 his homework, but his sister 5 . she cant’ work 6 the last problem. “Let me 7 you, say Jimmy. “No, please 8 . I’ll do it myself, says Mary. She thinks and thinks, an hour later she 9 it out. She is very tired, but very 10 . 1. A. good B. better C. fine D. well 2. A. at B. in C. on D. of 3. A. to make B. do C. to do D. to get 4. A. do B. to do C. did D. doing 5. A. doesn’t B. don’t C. needn’t D. can’t 6. A. on B. out C. at D. far 7. A. to help B. to speak C. help D. to tell 8. A. isn’t B. couldn’t C. can’t D. don’t 9. A. finds B. works C. looks D. does 10. A. sorry B. bad C. happy D. angry

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