根据英文写出相应的中文
1.be divorced from sb __________
2.divorce sth from__________
3.without mercy ______
4.have mercy on _______
5.at the mercy of _______
6.out of mercy __________
7.show mercy to ________
8.show no mercy _______
9.in advance (of sth) ____________
10.be used to do sth _______ be used to doing sth __________
be used for ______ used to do sth ______ be used as ______