Definition: If you have a change of heart, you change your opinion or feelings about something. Level: C2
起初他拒绝了，但似乎已经改变了主意。
At first he refused, but he seems to have had ___a ___change ___of ___heart.
改变主意后，她决定留下孩子。
After ___a ___change ___of ___heart, she decided to keep the baby.
政府在环境政策上的改变让所有人都感到惊讶。
The government's ___a ___change ___of ___heart on environmental policy surprised everyone.
