step-son ,step-mother ,step-brother ,sister-in-law ,parent-in-law

分类: 作业答案 • 2021-12-31 11:15:38

问题描述：

step-son ,step-mother ,step-brother ,sister-in-law ,parent-in-law
变为复数

答

step-sons
step-mothers
step-brothers
sisters-in-law
parents-in-law