问题

________ once a year by fire officials, whether a school is large or small, is a regulation that must be carried out in this country.

A:Inspected
B:Being inspected
C:Inspecting
D:Having been inspected

正确答案是：

同类题型

She a very close friend of mine .

He has been out of work for three months; as a result, he has to ____on family expenses by one-third.

Was it outside the bank ______ you had your money stolen?[ ]

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