A is B's sister.They are both twelve.怎么合成一句?回答要这样填：A and B are （ ）（

A is B's sister.They are both twelve.怎么合成一句?回答要这样填：A and B are （ ）（
A is B's sister.They are both twelve.怎么合成一句?
回答要这样填：A and B are （ ）（

A is B's sister.They are both twelve.怎么合成一句?回答要这样填：A and B are （ ）（
如果A和B是同一母亲所生,那他们定是孖生.
又如果她们同是女孩,长一样的,那便是 "A and B are monozygotic twins"
而如果性别样子不是ㄧ样,则可能是"A and B are dizygotic twins",
正确名词请再搜查.

如果A和B是同一母亲所生，那他们定是孖生。
又如果她们同是女孩，长一样的，那便是 "A and B are monozygotic twins"
而如果性别样子不是ㄧ样，则可能是"A and B are dizygotic twins"，
正确名词请再搜查。　

A and B are both twelve, and a is b's sister.