Having trouble hearing a pronunciation?语法正确吗?

英译汉-Are you having trouble logging into a site? I’m having trouble ____foreigners.A-understand B-understanding having suffered from heart trouble for years.为什么不用suffering 改错：I'm having trouble to learn English. Having trouble hearing a pronunciation?语法正确吗? I am having some trouble with my classmates at the moment里面的have trouble I was having trouble just drawing breath中drawing breath是否是分词,修饰trouble im sorry you aer having trouble in making friends?为什么用 having 啊? trouble trouble. having drunk some milk i have some trouble with my stomach这里为什么用having而不用have?为什么? Mary has having some trouble with her head.翻译下中文 I'm sorry you are having trouble in making friends.是啥意思? I'm having trouble后面接什么?do?to do?doing? i am having trouble finding out who has taken my book.为什么用finding out find ____ having trouble getting along with your parents.you yourself it that a college was having trouble with its boy students的意思中文 a college was having trouble with its boy students的意思是什么啊?急,