Ifwedon’tdoourbesttoreducepoll

--If we don’t do our best to reduce pollution, man’s history won’t last long.
--_________.

A．It’s OK	B．You are absolutely right
C．That’s all right	D．Mind your own business

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Hesitating what to do，________．

A．so let’s not go outing	B．the tour was cancelled
C．but we should still take the tour	D．we had to stay home

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The man stopped his bicycle beside the car______it had a broken chain．

A．or

B．until

C．as

D．yet

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A．more vividly than	B．much vivid than
C．as vivid as	D．so vividly as

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The attackers were arrested and didn’t know where they ______．

A．would take

B．are taken

C．were being taken

D．will be taken

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___________a time in the 1960s when young people liked wearing army uniforms.

A．It was

B．There was

C．It is

D．There is

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