I used to go camping a lot ,so it isn't the first time i _ in a t_英语解答

I used to go camping a lot ,so it isn't the first time i _ in a tent.
答案是have slept .

人气：279 ℃　时间：2020-05-26 18:54:38

解答

It was the first time that+过去完成时
It is the first time that+现在完成时