substantiate
v[Tn]
give facts to support (a claim, statement, etc); prove 用事实支持(某主张、 说法等); 证明; 证实
Can you substantiateyour accusations against him? 你指责他, 能提出事实根据吗?
Second, if your friends have problems, do not give advice. Ask questions instead, such as What do yo want? How do you feel about it? What are you afraid might happen? They will be able to find answers to any problems themselves, with your support. They