单项选择题

If a test taker finds an item to which the answer is unknown, it may be ___________ to leave it blank and go on with the test.

A．desirable
B．admirable
C．advisable
D．acceptable
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单项选择题
During their first teacher-training year, the students often visited local schools for the ___________ of lessons.
A．investigation
B．inspection
C．repetition
D．observation
单项选择题
The guest ___________ one of the hotel servants of stealing her money when she was out.
A．blamed
B．accused
C．charged
D．criticized
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