（2015·陕西）Mary really hard on his book and thinks he'll have finished it by Friday.

题型：单选题题类：真题难易度：普通

2015年高考英语真题试卷（陕西卷）

Mary really hard on his book and thinks he'll have finished it by Friday.

A、worked B、has been working C、had worked D、has worked

举一反三

— He can't. He ________ for an hour.

—She is in the kitchen. She ______ the housework all morning.

—No wonder. You {#blank#}1{#/blank#} (work) in front of that computer too long.

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