问题描述：
be seen to do sth 和 be seen do sth 有什么不同?举实例说明
In winter when clothes are washed and hung up near a fire,steam can （be seen to rise） from them.
括号里用的词对吗?还是用be seen raising?
In winter when clothes are washed and hung up near a fire,steam can （be seen to rise） from them.
括号里用的词对吗?还是用be seen raising?
问题解答：
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