GIỚI TỪ IN/AT/ON

My lesson starts _____ eight o'clock.

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My grandfather usually buys a newspaper ____ the morning.

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We always wear warm clothes _____ winter.

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We give presents to everyone ____ Christmas.

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I usually visit my grandparents _____ Sunday morning.

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John's birthday is ______ November 3rd.

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The film finishes ______ 10 p.m.

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The supermarket is closed _____ Sunday.

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I am going to go on business ______ September.

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We don’t have to go to work ______ the weekend.

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