has还是have？

have 看后面的主语~

I have a dream which many boys all have.
Sometimes I do some things which doesn't sound good.

have
I sometimes do some things which aren't heart well

have

当然是have，因为前面的boys是复数，据我的经验有all的时候大多是复数。

翻译：
Sometimes I do something which sounds not good.
或者Sometimes I do things which sound not good.

不好听应该是sound not good,请注意名词复数时候sound的用法。

have