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

来源:学生作业帮助网 编辑:作业帮 时间:2024/06/11 14:31:58

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

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