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51. I can see a cat on the floor. (改為一般疑問句并作肯定、否定回答)

―      you see a cat on the floor?

—Yes,I         .

—No,I        .

50. ―Who         swim?

―Mary          . She swims well.

49. ―         you play the piano?

—Sorry,I        play the piano,but I       sing for you.

48. He is only five. He      cook for himself.

47. ―Are you good at singing? 

―Sorry,I         sing.

46. ―         you speak Chinese?

—Yes. But I         speak a little.

45. She does well in football and always gets good       (成繢) .

44. I will work harder next        (學(xué)期) at school.

43. They are in the school basketball       (球隊(duì)) .

42. Mr Li and Mrs Li are teachers and they       (教) English.