单项选择题


Conversation 2

A．None.
B．Once.
C．Twice.
D．Four times.
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单项选择题
A．Tim is learning to repair jeep.B．It is difficult to find Tim lately.C．Tim is too busy to help them now.D．Tim finds it difficult to pass his exams.
A．Tim is learning to repair jeep.
B．It is difficult to find Tim lately.
C．Tim is too busy to help them now.
D．Tim finds it difficult to pass his exams.
填空题
This water has been specially (pure)______for use in cooking.
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