—tokeepourclassroomcleanandtid

—_______ to keep our classroom clean and tidy.
—You are right.

A．That’s our duty	B．This is our duty
C．It’s our duty	D．The duty is

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— You used to 　　　　 the bus to school, didn’t you?
— Yes, I did. However, I am used to 　　　　 to school now.

A．take; walk

B．take; walking

C．taking; walking

D．taking; walk

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— What other rules do you have in your class?
— Each student has to 　　　　 a composition once a week.

A．hand in

B．hand up

C．hand over

D．hand out

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We needn’t hurry all the way to the airport — the flight has been 　　　　 because of the bad weather.

A．put on

B．put off

C．put away

D．put up

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— What happened?
— The owner changed his mind and refused 　　　　 his house.

A．sell

B．sold

C．selling

D．to sell

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— I think saving water is more important than recycling paper in our daily life.
— I disagree. Recycling paper is 　　　　 saving water.

A．the same as	B．so important as
C．as important as	D．the most important

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