急急急!!!请帮忙看下

I've told my roommate to stop making noise, but his friends are visiting so frequently that they cannot make it quiet.
这样会更好些。

the word "situation" replace " phenomenon"

The sentence should be " I have told my roommate to change the noisy situation but the visitation of his friends is too frequent to be quiet."

i have told my roommate to restrict his friends visit, because their make too much noise.

不对，
主要两方面的问题，首先是措辞，如phenomenon用的不恰当；
然后句式也不对，
我想你要表达的意思是：我告诉过我室友，要改掉吵闹的习惯，还有就是他经常有朋友悄悄来访（这里有点不理解，我想应该是他朋友来的时候也不注意保持安静吧）。

我给你重写吧

i have told my roommate that he should change his behavior of making noise and the frequency of his his friends’visiting too high.

吧phenomenon改成environment

i asked my roommate to keep quite,but the frequent visiting of his friends leave it impossible.