我不得不去了三家不同的书店，才找到她想要的那本书。

I had to go to three ___different bookstores to find that book she wanted.

我有三位不同的老师，分别教授三件不同的事。

I have three ___different teachers for three different things.

我们有着不同的爱好，所以不常一起活动。

We have ___different hobbies, so we don't often do activities together.