单项选择题

Michael failed the exam. He（）have spent so much time playing computer games and chat-ring online.

A. mustn’t
B. couldn’t
C. wouldn’t
D. shouldn’t

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单项选择题
Which company did the woman work in（）

A. A trading company and a trust company.
B. A trading company.
C. A trust company.
D. A visiting delegation.
单项选择题
What do they not need to buy（）

A. Beer.
B. Coffee.
C. Tea.
D. Vegetables.
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