根据图片提示从方框中选择合适的内容填空，将序号填在横线上。
| A. sit down B. sorry C. over there D. your E. fly away |
1．A: Is this
_______ ruler?
B: No, it isn’t.
2．Bird, bird, don’t
_______.
3．A: Please
_______, Grandpa.
B: Thank you, boy.
4．A: Where is your robot?
B: It’s
_______!
5．A: Don’t shout in the library, Liu Tao.
B: I’m
_______.
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