问题
选择题
Witnesses also say they saw Justin ____ towards his house at 10.45 p.m.
A．walked
B．walking
C．to walk
D．to be walking
答案
答案：B
考察非谓语动词。See 的用法为，see sb do sth 看到某人干某事/ see sb doing sth（看到某人正在干某事）
句意为目击者说他们看到了贾斯汀在十点四十五分朝家里走去。