Whydoesthelakesmellterrible?Be

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--Why does the lake smell terrible?
--Because large quantities of water _______.

A．have polluted	B．is being polluted
C．has been polluted	D．have been polluted

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—Are you still mad at her? —Not really ，but I can’t that her remarks hurt me.

A．deny

B．refuse

C．reject

D．decline

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John had planned to make a compromise，but he changed his mind at the last minute.

A．anyhow

B．otherwise

C．therefore

D．somehow

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At your company there are a few machines similar to described in this magazine.

A．these

B．them

C．those

D．ones

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I really can’t thank you enough， sir. —.

A．That’s the most I could do	B．I’m glad to have been of help
C．No problem	D．With pleasure

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IP addresses are the unique sequence of numbers ______ to each computer, websites or other Internet-connected devices.

A．to assign

B．assigning

C．assigned

D．being assigned

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