来自小晴儿的问题
现在完成时与一般过去时尽管定义已经背的滚瓜烂熟，但在做题时还是不知如何区分
比如下面这道题： -oh,I'm really fed up with Jim.He is always causing me trouble -I___ you to keep away from him!But you wouldn't listen. A told B tell C have told D would tell
