1.They are ____A.growns-up B.grown-ups C.grown-up D.growns-ups此題答案是B，為什么不能選C。2.Li Ying his three ____。A.brothers-in-law B.brothers-in-laws C.brother-in-law D.brother-in-laws此題答案是A，為什么不能選C。
熱心網友
前有are，three是復數
1.They are ____A.growns-up B.grown-ups C.grown-up D.growns-ups此題答案是B，為什么不能選C。2.Li Ying his three ____。A.brothers-in-law B.brothers-in-laws C.brother-in-law D.brother-in-laws此題答案是A，為什么不能選C。
前有are，three是復數