问题描述：
Marry is a teacher.she is often smiling.合并句子Marry is a teacher _ _ often smiling.
Marry is a teacher.she is often smiling.合并句子
Marry is a teacher _ _ often smiling.
Marry is a teacher.she is often smiling.合并句子
Marry is a teacher _ _ often smiling.
问题解答：
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