大意：你知道这个小孩子在帮助一位老人家过马路嘛?
who 指代 the little boy
选择C
Do you know the little boy ( )is helping the old man cross the road
Do you know the little boy ( )is helping the old man cross the road
A.which B.who C.whom
A.which B.who C.whom
英语人气：930 ℃时间：2019-11-09 18:24:26
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