根据提示填空(每空一词)
We want to see koalas because they’re really interesting.(同义句转换)
Koalas are really interesting, ____ we want to see them.
答案
so
知识点:(英语)连词

在一个英语句子中表因果关系时,because和so只能用其中一个。because后接原因,so后接结果。

略
