________ wonderful music it is!

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________ smoke, or you will pollute the air in the office.

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________ easy work it is!

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－Can you swim?

－Yes, I ________.

[　　]

A．can　　B．do　　C．can't　　D．don't

We ________ supper at six.

[　　]

A．haven't　　B．not have　　C．don't have　　D．have not

He ________ a teacher.

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A．is not　　B．not is　　C．is no　　D．no is

It's no use ________ after you made the mistake.

[　　]

－Do you often get someone ________ your house?

－Yes, I often have it ________.

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He likes ________ badminton, but he doesn't like ________ today because of the strong wind.

[　　]

I found it hard ________ a foreign language.

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