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求解答.31.—Isitfortwomonthstheyhavestayedhere?—No,itisonlythreeweekstheyarrivedhere.A.that;sinceB.that;whenC.when;thatD.since;before

题目详情
求解答.
31. —Is it for two months they have stayed here?
—No, it is only three weeks they arrived here.
A. that; since B. that; when C. when; that D. since; before
▼优质解答
答案和解析
选A.