Tomhasbeenworkingfor的知识精选

—Tomhasbeenworkingformorethan9hours!—He
问题详情:—Tomhasbeenworkingformorethan9hours!—He_________beverytired.A.will          B.must             C.hasto            D.shall 【回答】 B知识点:虚拟语气与情态...
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