Please tell me the commonly accepted reading of this kanji.

Learning Japanese idioms is difficult.

There are many houseplants in my room.

He lost everything.

She is planning a date with her current boyfriend.

My boyfriend gave me a gift.

Everyone was surprised by the news.

It's better for him not to know the truth. After all, ignorance is bliss.

He is feigning ignorance about that problem.

He knows that pain through his own experience.