precisely ·adverb (FOR EMPHASIS)

“你看起来累了——你应该回家休息。”——“我正打算（恰恰）那么做。”

"You look tired - you should go home and rest." - "I'm going to do ___precisely that."

但（正是）因为噪音，他们才考虑搬家。

But it's ___precisely because of the noise that they're thinking of moving.

书籍可能不具备互动性，但这（恰恰）是它们的优势所在。

Books may not be interactive, but that's ___precisely where their advantage is.