怎样确定句子中的主语As a journalist you should first decide what event
怎样确定句子中的主语
As a journalist you should first decide what events____before you make some interviews.
B.to report C.to be reported
A和D我知道不对,所以没写上去,可是我选的是C,答案说是B,解释是说YOU在这里做逻辑主语,可是我觉得EVENTS才是主语,请问到底怎样看呢?