英语名词语法问题11.He invited all of his ______ to join his wedding

英语名词语法问题
11.He invited all of his ______ to join his wedding party.
a.comrade-in-arms c.comrades-in-arm
b.comrades-in-arms d.comrade-in-arm
12.All the ______ in the hospital got a rise last month.
a.women doctors c.woman doctors
b.women doctor d.woman doctor
13.After ten years,all these youngsters became_____.
a.growns-ups c.growns-up
b.grown-up d.grown-ups
14.The police investigated those _____ about the accident.
a.stander-by c.standers-by
b.stander-bys d.standers-bys
15.The Nazi kept those ______ in their concentration camp.
a.prisoner-of-wars c.prisoners-of-war
b.prisoners-of-wars d.prisoner-of-war
答案分别是CADBB