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5. We must do exercise because it ____us. A. is good for B. is good to C. is good with ( ) 6. He ___ at 6:00 in the afternoon. A. goes to home B. go to home C. goes home ( ) 7. He ____ his homework ____ Sundays. A. doesn’t , on B. don’t do, in C. doesn’t do, on D. don’t do, on ( ) 8. Lily goes to school ______ eight o’clock. A. in about B. at around C. around at ( ) 9. Can you ____ Chinese ,Tom? A. speak B. say C. tell ( ) 10. I ______ watch so I don’t know the time. A. don’t have a B. have not C. not have a ( ) 11. We usually eat ____ lunch at 12:30. A. a B. the C. / ( ) 12. Mike often exer