单项选择题

As a matter of fact, the true nature of communication process can be concluded in one sentence: Who says () through what channel to whom.

A. what
B. when
C. how
D. where

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单项选择题
Realizing that he hadn’t enough money and () to borrow from his father, he decided to sell his watch.

A. not wanted
B. not to want
C. not wanting
D. wanting not
单项选择题
John had been working hard and ()

A. so had his brother
B. so his brother had
C. so was his brother
D. so his brother did
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