单项选择题

Which country’s way of communication made use of visible signs（）

A．French
B．Roman
C．African
D．American

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单项选择题

A. a one
B. the one
C. the ones
D. these ones

填空题

Xiao Li: I’m sorry, Professor Liu. I have to be late again. I just had a car accident. Professor: What An accident!（）

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