Tom was noticed __into that room at that time.a .walk b.walks c.w_英语解答

Tom was noticed __into that room at that time.a .walk b.walks c.walking d.walked

人气：330 ℃　时间：2019-10-18 08:04:45

解答

C
notice sb doing sth改成被动.
notice sb do sth改成被动为sb be noticed to do sth.（即主动不加to的,改成被动需加to）
另外两个不与考虑.