They________abouteighthundredEnglis

发布时间:2020-07-26 19:04:30

They ________ about eight hundred English words by the end of last term.A.will learnB.had learnedC.are going to learnD.have learned

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B解析本句的时间状语暗示了本句的谓语动词要用过去完成时.
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