Paul doesn't have to be made ________. He always works hard.

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She had never been to the Great Wall before. Today she saw it ________ the first time.

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He gave up ________ two years ago. That's to say, he is a non-smoker now.

[　　]

________ was the party at Jim's house last night?

[　　]

Jim has made many friends since he ________ to China.

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The box is ________ heavy ________ I can't lift it.

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You must ________ your handwriting. I can't read your homework.

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A．improve　　B．raise　　C．notice

I find ________ difficult to remember everything, though I am still young.

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A．that　　B．this　　C．it

Your mother look a bit disappointed. You ________ have told her the truth.

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A．should　　B．must　　C．can

What do you feed the chickens ________?

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A．on　　B．to　　C．/