单项选择题

Every corner of the room ______ by this Friday.

A．should have painted
B．will have been painted
C．is painting
D．will paint
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单项选择题
What is the author’s main problem
A．He started to cough.
B．He got lung cancer.
C．He tried to give up smoking but failed.
D．He regretted smoking in high school.
填空题
former clerks
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