高中英语选择题1.--Youlooktired.--Yes.I____________non-stopuntil5o'clock.AhadbeenworkingBhaveworkedCwasworkingDhadworked应该选什么?为什么?2.He'ssuchafunnysortofperson_________Idon'tunderstandatall.AwhoBthatCwhomDas选什么?为什么?
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