— You look tired.
— Yes. I ___ non-stop until 8 o’clock this morning.
A．had workedB．workC．have workedD．was working
A
考查時(shí)態(tài).句意:你看起來很累.——是的。我一直不停的工作到今天早上八點(diǎn)鐘�？芍渥用枋龅氖沁^去發(fā)生已經(jīng)完成的動(dòng)作，故用過去完成時(shí)態(tài)。選A。
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