Theairpollutionisterrible.Itwi

- The air pollution is terrible.
- It will be worse ________ we take action to protect the environment.

A．if

B．unless

C．until

D．when

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It’s very difficult to learn geography well, but you can’t __________.

A．put it up

B．cheer it up

C．look it up

D．give it up

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–Why isn’t your brother good at math?
-- Because he thinks math is __________ than any other subject.

A．difficult

B．much difficult

C．more difficult

D．the most difficult

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–What does your history teacher look like? .
-- __________.

A．He is good

B．He likes reading

C．He’s thirty

D．He’s thin and tall

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I ________ to do chores, but I have to do them every day.

A．like

B．enjoy

C．hate

D．hope

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-- Which floor does John live on?
-- He lives on the __________floor of the building.

A．five

B．fifth

C．fifteen

D．fifty

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