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题型：单选题题类：模拟题难易度：普通

Mr. Wang is a teacher. He ______ in this school for 20 years.

A、has worked B、worked C、will work D、works

举一反三

He the book for ten years.

—When did you begin to live here, Ann?
—I ________ in this town since I ________ ten.

My grandparents ________ with us since 2008.

I ate some fruit, which I ______ since I was a child, and the vegetables from my garden.

Lily's mother hasn't {#blank#}1{#/blank#}(see) science movies yet, and she is going to see one the weekend.

科学家们认为地球上的生命已存在数亿年了。

Scientists think that {#blank#}1{#/blank#} life on the earth for {#blank#}2{#/blank#} years.

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