填空题

Textbooks are used (teach) ______ us how to acquire knowledge.

【参考答案】

to teach
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单项选择题
A．He’s prepared for it.B．He missed it.C．It will be difficult.D．He doesn’t worry about it.
A．He’s prepared for it.
B．He missed it.
C．It will be difficult.
D．He doesn’t worry about it.
填空题
sorry
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