单项选择题

A) To calm themselves down. C) To show their impatience.
B) To enhance concentration. D) To signal lack of interest.

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单项选择题
[A] Call the office. [C] Pay the money. [B] sign your name on the notice board in advance. [D] There is no need to reserve a place.
单项选择题
A. To do research for her story. B. To go shopping. C. To meet her professor. D. To take a break from her work.
A. To do research for her story. B. To go shopping.
C. To meet her professor. D. To take a break from her work.
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