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题型：单选题题类：常考题难易度：困难

2017届北京朝阳区高三上期中考试英语试卷

________ hard all day, I went to bed at 8 o'clock.

A、Having worked B、Working C、To work D、To have worked

举一反三

The matter ________ our study surely requires ________ carefully.

This problem is said _____ three times.

If you want to attract more customers, try {#blank#}1{#/blank#}（做广告）in the local paper.

E{#blank#}1{#/blank#} with some advanced tools ,they began their exploration.

It's no use {#blank#}1{#/blank#}（争论）with Tom about it. He is so stubborn that he won't change his mind.

All passengers are expected {#blank#}1{#/blank#}(fasten) the seat belts when the plane takes off.

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