We mustn't waste ________ food ________ drink.

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- May I go to play football now?

- No, you ________ .

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There's still some drink in the cup, please ________ .

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The car isn't there. ________ Mr Smith ________ his children has left home, I think.

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I wondered ________ Father Christmas had put the present in my stocking.

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I had just got into bed last night ________ I felt the floor shaking under my bed.

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I shall not call him ________ he telephones me.

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He always helps people when they are ________ trouble.

[　　]

The teacher was given ________ some flowers ________ the students.

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I think he will be back ________ two o'clock.

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