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题型：单选题题类：常考题难易度：容易

____the end of the day, we were very tired.

A、In B、At C、To D、By

举一反三

Nobody could solve this difficult problem alone others' help.

They arrived ________ Shanghai ________ a cold morning.

His grades in the exam put him the top students in his class.

Look, Nancy is sitting{#blank#}1{#/blank#} her father and mother. (填介词)

—What's this ________ English?

—It's a hat.

If you land a sign, you must say what it means.

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