英语疑惑的选择题啊
Nobody knows the palce because few people ______ there before.
A have beenB, had been C have gone D, had gone
before的句子不都是常与过去完成时连用的吗?
本题到底是用现在还是过去完成时? 有人说前面有knows所以后面应该用现在完成时,可我仍然是似懂非懂,求解释