My counsin's favourite drink is orange juice.

My counsin's favourite drink is orange juice.
My counsin's favourite drink is orange juice.

My counsin's favourite drink is orange juice.
我表弟的最喜欢的饮料是橘汁

我表弟最喜欢的饮料是橙汁。

我表哥最喜欢喝的饮料是橙汁（橘子汁）

是不是cousin?那样的话就是：我堂兄弟最爱的饮料是橙汁。