heart

她心地善良。

She has a kind ___heart.

我爷爷的心脏有点问题。

My grandfather has a problem with his ___heart.

她的心脏跳得很快。

Her ___heart is beating fast.

经常锻炼有助于保持你的心脏健康强壮。

Regular exercise helps keep your ___heart healthy and strong.

在他内心深处，他知道自己犯了错。

Deep in his ___heart, he knew he had made a mistake.