We require all visitors to __________photo identification prior to en-考呗网题库移动版

单选题 We require all visitors to __________photo identification prior to entering the building.

A．assign
B．notify
C．present
D．permit

参考答案C

解析:【答案】C。解析：“assign”有“分派”的意思；“notify”是“通知”；“permit”是“允许”。

单选题 Any employee working late on a Friday must remember to turn off all computer equip-ment __________leaving for the night.

A．then
B．until
C．before
D．because

单选题 While the accounting department is closed, all billing questions will be __________by the customer service department.

A．expired
B．attended
C．replied
D．handled

单选题 After__________ requests by local residents, the private library was opened to the public.

A．repeated
B．repeatedly
C．repetition
D．repeating.