Bill and Sam is taking a walk对主语提问应用who is 还是 who are?_英语解答

Bill and Sam is taking a walk对主语提问
应用who is 还是 who are?

人气：164 ℃　时间：2020-07-01 17:11:49

解答

应用 who is
因为提问的时候是不知道有几个人以及都是谁