礼仪的目的是相互接受，当对方因为礼仪而接受你时，就会比较容易地接受你的请求、购买你的产品、满足你的愿望等。
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The whole class_________the teacher attentively.
A. are listening to
B. is listening to
C. are listening
D. is listening
Neither you nor Lily__________ to the Great Wall before.
A. had been
B. has gone
C. has been
D. have been
The family I am staying with___________very friendly.
A. is
B. are
C. was
D. were
I told him what I was surprised_________his attitude towards his study.
A. was
B. were
C. at was
D. at were
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