简单点的翻译如下：
1.My (older/elder) brother is a college/university teacher,who teaches economcs.
2.I've grown up,and/so I can decide (it) completely by myself.
3.Generally speaking,my reaction反应/response反映 is good.
generally speaking也可以换写成in general,on the whole等.
4.How long have you been married?
动词marry不能延续,不能跟how long,但是be married可以.
5.Why do you hate/dislike this (kind of) medicine so much?
注：/ 表示可以任意选用其一,（ ）表示可以省略不写.