________ dances well but also sings well.

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I really don't know ________.

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A．when the train will leave

B．where is his purse

C．how does he know this

D．what the boy like to eat

　　－May I go now?

　�。璑o, you ________. You ________ stay here.

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　　－Must I copy the new words in class?

　�。璑o, you ________. You ________ do it at home.

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　�。瑿ould I borrow your bike?

　�。璝es, of course you ________.

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You ________ play on the mad. It's dangerous.

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Monica ________ to sleep until she worked ________ the maths problem.

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When Mike was three, he could ________ read ________ write.

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He wanted to watch the football match very much, ________ he couldn't get a ticket.

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Mary's mother was ill, ________ she had to take care of her.

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