问题
选择题
—How long do you think it will be ________ we win the football World Cup?
—Perhaps twenty years.
A．when
B．since
C．that
D．before
答案
答案：D
句型考查题。It will be +段时间 +before …。句意：你认为要过多久我们才能赢得足球世界杯？也许二十年。
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