最佳答案：1:return kindness with ingratitude[hatred] 2:bite the hand that feeds one 3:one's gen
1:return kindness with ingratitude[hatred]
2:bite the hand that feeds one
3:one's generosity was reciprocated with animosity
4:quit[repay] love with hate
5:requite[return] evil for good
6:requite kindness with enmity
7:requite love with hate
8:take a good deed and change it into evil for sb.
