指出下列句子是什么从句I have no idea what you are talking about.What you are suggesting makes a lot of sense.What they asked me to do was completely unreasonable.Have you noticed that people often buy useless things?We often fear what we k

指出下列句子是什么从句
I have no idea what you are talking about.
What you are suggesting makes a lot of sense.
What they asked me to do was completely unreasonable.
Have you noticed that people often buy useless things?
We often fear what we know nothing about.

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