完形填空中定语从句的时态
做过许多完型题,下面两个句子给我弄糊涂了:
Theteacheraskedthestudentstowriteaboutthewaterfallthey()beforeandonestudent'spaperwasjustonesentence.
A.visitedB.hadvisited(选A)
Afterthejudgeheardwhat()tothem,hesaidtothebusinessman.
A.happenedB.hadhappened(选B)
第一题中我看到before便选了B,J结果错了;第二题中我吸取上题经验选A,又错了.
但我总觉得俩题选哪个都行,这是怎么回事?
第一句是个定语从句啊......