IX.从方框中选择最佳选项,完成对话,并把字母序号填在后面的方格中。(5分)
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A:Hello, Lucy! 51 Is this your book?
B:No, it’s not mine. Where did you find it?
A:Under the bench in the gym.
B:When did you find it?
A: 52 .
B:Oh, 53 . Because Class Two had a lesson in the gym just now.
A:Let’s ask the teacher of Class Two. 54 .
B:I’m sorry I can’t go with you. I must practice the piano right away.
A: 55 . I have to go alone. See you.
B:See you.
51. 52. 53. 54. 55.