问题
选择题
As a volunteer ,Guo Mingyi ______always _____help others who are in trouble .
A．is ;seen
B．is ; seen to
C．is ; see
D．is ;saw
答案
答案：B
此题考查固定结构see sb do sth表示看到某人经常做某事。变为被动语态时的句型结构为be seen to do sth。
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