I （） the room when they were having an English class.A:enter

I （） the room when they were having an English class.A:entered B:enter C:go D:go in
对不起，ABCD弄错了~A:entered B:entered in C:went D:went in 现在选哪个？刚刚弄错了，不好意思。这个题目太搞了，