Are you very familiar with Toronto,Li Lin?

问题描述:

Are you very familiar with Toronto,Li Lin?
No.This is the first time I ( ) the city.But I know it's the biggest and richest city in Canada.
A visit B visited C have visited D had visited
请解释每一个选项.

A.
A为一般现在词态.B为过去式.c为现在完成式,意思就是我们已经做完了某件事.D为过去完成时,意思就是我们以前就已经做过这件事.
根据语境,我是第一次做这件事而且正在做.所以A.