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题型：单选题题类：真题难易度：普通

After Steven sent some e-mails ,he______ surfing the Internet.

A、starts B、has started C、will start D、 started

举一反三

Last year we p{#blank#}1{#/blank#} a lot of trees around our school. And now they grow well.

Mr.Miller {#blank#}1{#/blank#} (provide) us with lots of useful information last year.

— Do you know yesterday?

—Yes. She was ill in hospital.

Many doctors and nurses{#blank#}1{#/blank#}(与……战斗)with H7N9 in 2013.

My father went (去) to Shanghai two months ____.

We have studied at this school for three years. {#blank#}1{#/blank#} {#blank#}2{#/blank#} {#blank#}3{#/blank#}three years since we{#blank#}4{#/blank#}at this school.

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