when you take a bus alone，it’S safe for you__________．

A．to sit behind the driver or with other people，but not to sleep

B．to talk with the driver

C．to calI your friends

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参考答案

1 The main idea of the text is__________．

A．how to cross the street

B．how to be safe in your everyday life

C．how to use the public phones

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2 It took__________two days to finish this report．

A．he

B．him

C．his

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3 __________a teacher and some students in the classroom.

A．There are

B．There has

C．There is

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