单项选择题

He was ill, and ______ could not come.

A. because
B. so
C. therefore
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单项选择题
He arrived at last, ______.
A. was tired and hungry
B. tiredly and hungrily C. tired and hungry
单项选择题
Your hair is too long, so you should have ______ a little.
A. it cut
B. them cut
C. cut it
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