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题型：单选题题类：模拟题难易度：普通

I always go skiing with my friends ______ winter.

A、in B、on C、at D、for

举一反三

What's the matter ________ the kitchen fan.

I do my homework _____ 19:00 to 21:00 on weekday.

—Warmly welcome! All my family really hope you can enjoy yourself _______ your stay in my home.

—Oh, thank you so much. I believe I will.

My family watch football match _____TV.

I should pay 20 yuan ________ the book.

My mother usually makes a big cake ____ me on my birthday.

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