◎ 题干
There are eight tips in Dr Roger's lecture on —sleep, and one of them is: _____ to bed early unless you think
it is necessary.

[     ]

A. doesn't go
B. not to go
C. not going
D. don't go
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“There are eight tips in Dr Roger's lecture on —sleep, and one of them is: _____ to bed early unless you thinkit is necessary. [ ]A. doesn't go B. not to go …”主要考查了你对  【祈使句】  等知识点的理解和应用能力。关于这些知识点的“档案”,你可以点击相应的链接进行查看和学习。