She _______(add) that having conversations with friends was not helpful at all.这里要填什么,为什么从语法角度试做分析

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She _______(add) that having conversations with friends was not helpful at all.这里要填什么,为什么从语法角度试做分析

She _______(add) that having conversations with friends was not helpful at all.这里要填什么,为什么从语法角度试做分析
She _______(add) that having conversations with friends was not helpful at all.
这里要填什么,为什么
从语法角度试做分析

She _______(add) that having conversations with friends was not helpful at all.这里要填什么,为什么从语法角度试做分析
added
句中动词 was 是过去式,所以,主句动词也用过去式

added补充道

was added to 被加入到

added 补充说