单项选择题

Paul and John work on ______ days.

A．altering
B．alternative
C．alterable
D．alternate
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单项选择题
A few simple ______ to this plan would greatly improve it.
A．demands
B．modifications
C．modulations
D．assessments
单项选择题
The ______ of his first novel appeared in The Times yesterday; no doubt he was very happy to see that.
A．survey
B．inspection
C．appraisal
D．review
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