Evenifthereisnoscientificproof

Even if there is no scientific proof secondhand smoke causes cancer, there is no reason why nonsmokers should be forced to take this risk.

A．which

B．that

C．when

D．where

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It was several years ________ I realized ________ David had lied to me.

A．when; that	B．that; when
C．before; that	D．until; why

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A．which

B．when

C．where

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—Set aside ________ you disagree and try to find ________ you have in common.

A．what; what	B．where; what
C．what; which	D．where; which

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A．knock off	B．take off
C．keep off	D．break off

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—I think that every need of the customer should be attended to.
—________.

A．I'd love to	B．I'm with you on that
C．It's my pleasure	D．It's up to you

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