Thoughthedangersofsmokingtothe

Though ____ the dangers of smoking to their health, smokers still find it hard to give up smoking.

A．aware

B．aware of

C．are aware of

D．be aware of

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A．are; is

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C．are; are

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A．being carried out

B．carrying out

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A．neither won’t Tom

B．Tom won’t either

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A．that

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