根据课本上的内容及常识回答问题
1. When can we see the sun?
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2. When can we see the moon?
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3. Are there any people on the moon?
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4. Does the moon go around the sun?
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5. Does the earth go around the sun?
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Is that a ruler?
--______, It’s a pen.

A．Yes ,that is.	B．No,it is.
C．No ,that isn’t.	D．No,it isn’t.

Can I ____ a bag?（  ）

A．have

B．has

C．my

D．your

— Would you like a piece of pizza?  (   )
—

A．Yes, here you are.	B．No, thank you.
C．Yes, I have one.	D．Fine, go ahead.

根据自己的实际情况，回答问题：Do you like dancing? _______________________________