Office Center Towers This is (144) all tenants that tomorrow morning, May 10th, service work will be performed on the building f

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问题                      Office Center Towers
This is (144) all tenants that tomorrow morning, May 10th, service work will be performed on the building fire alarm system (145) the hours of 9:30 and 10:30. As part of this procedure, it will be necessary to test the alarm and you may hear it (146) three or four times in the course of the morning. Do not be concerned when you hear the alarm go off. It is part of the normal service routine.
If you have any questions, please contact the building superintendent’ s office. Thank you for your patience.

选项 A、go off
B、lead to
C、takeoff
D、apply to

答案A

解析 空格前的hear是表示自觉进行的动作,所以空格内应填入动词原形。这里的it指的是the alarm,空格内填入的词语是描述alarm进行的动作,做句子的宾补。与alarm搭配的动词是go off(响起)。
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