单项选择题

Mr. Grey has two sons, _________ are famous dancers.

A．both they
B．both of them
C．they both
D．both of whom
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Why didn’t the man pass the exam
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B． He copied Smith’s paper.
C． Nobody helped him.
单项选择题
What’s the time now
A． 10:10.
B． 10:20.
C． 10:30.
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