The other one in a yellow coat is () his sister,emma

问题描述:

The other one in a yellow coat is () his sister,emma
括号填什么?

不要填,已经很完整了
要填的话可以来个副词,如:actually 实际上,事实上可是。。。书上让你填空。。。怎么填啊我不是说了可以是actually 吗?用not 也行