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I ________（养成）the habit of eating between meals.

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New machines _____ _____（被研制，被发展）to improve the work.

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He is _____ ______ _______（第三个最高的）boy in our class.

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Success _____ ______（来自）hard work.

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The accident ____ ____（造成）three deaths.

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____ _____ ______ _____（因为）the bad weather, we put off the meeting.

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He got up late. ______ ______ ______（因此）,he missed the last bus.

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I had a bad cold ______ ______ _____ _____（由于）being caught in the rain.

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There is _____ ______ _____（一个实验农场）.

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He _____ ______（对……进行实验）rats.