both men genuinely regretted___ 1 their leave 2 to have to leave3_英语解答

both men genuinely regretted___ 1 their leave 2 to have to leave
3 having to leave 4 they must have left
选择哪一个,及为什么

人气：223 ℃　时间：2020-02-15 12:52:21

解答

2 to have to leaveregret to do sth 后悔去做某事,还未做.
regret doing sth 后悔做过某事做过了.