填空题

The first part of the 20th century (see)（）more great inventions.

【参考答案】

saw
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填空题
The policeman held up his hand to stop the traffic so that the children could cross the road in (safe)（）.
单项选择题
What’s the probable relationship between the two speakers（）

A．Clerk and guest.
B．Shop assistant and customer.
C．Employer and employee.
D．Store keeper and customer.
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