before until

问题描述:

before until
It was a long time the miners in Chile were rescued from under the mine.
A.until B.when C.before D.since

C.before
It is/was +时间段+before 从句,"过了...才..."
句意:过了很长时间,智利的矿工们才从矿井下被救出来.
until 用于否定句中,not...until ...直到...才...
when,since 用在此句不恰当.