题型：单选题题类：模拟题难易度：普通

Tony knows China very well because he ______ in China for twenty years.

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

举一反三

—No, I___________ it for one year.

As far as I know, Tom {#blank#}1{#/blank#} for two weeks.

Mary{#blank#}1{#/blank#} {#blank#}2{#/blank#}traveled to China.

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