—Guess what？I came first in that contest.
—Great！You ________ a lot during the past two weeks.
A．must practiseB．should practise
C．should have practisedD．must have practised
在比賽中得了第一名一定是經(jīng)過(guò)很多練習(xí)換來(lái)的，所以D項(xiàng)must have practised符合語(yǔ)意，表示對(duì)過(guò)去情況的肯定推測(cè)。 答案　D
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