I have a hard time(to know/knowing)who my real friends are.

I have a hard time(to know/knowing)who my real friends are. You have a difficult time knowing who your real friends are. real,are,you,have,time,who,knowing,your,difficult,a,will,fri 现在分词用法You will have a difficult time knowing who your real f my,to,me,time,because,good,I,a,friends,are,have,nice,(连词成句) You will have a difficult time knowing who you best friends my,to,me,time,because,good,i,a,friends,are,have,nice怎么连词成句啊啊 we will have a different time k_ _ _ who our real friends ar where can i find my friends?i want to have a friend who is f I know you have a very hard time. you will have aproblem___who your real friends are.a.be know i like to have friends who are different from me