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Fromtimetotimeacrocodilehassnatchedsomeoneheorsheisevenawarethatthecrocodileisthere.A.whenB.untilC.sinceD.before

题目详情
From time to time a crocodile has snatched someone _______ he or she is even aware that the crocodile is there.
A.when B.until C.since D.before
▼优质解答
答案和解析
D

考查时间状语从句。句意“有时候,在人们意识到有鳄鱼之前,鳄鱼会突然捉住他。”A“当”;B“直到”;C“自从”;D“在......之前”。故选D。