急用！！！求此英语短文改错解析

Dear Aunt,
I am unhappy now, and I don’t know how I should do. Mary and I
got to know each other through English chat-room. Since then, we have（been chatting）online almost every night. We have many（thoughts或者aspects）in common as we are both girls at the same age. We（like）to tell each other many things which are kept（secret）to others. I will feel uncomfortable（if）（或者保留unless，把can’t改为can）I can’t find her online. （However）, she told me two days ago that she would go abroad soon. She（insists）that she（will）（或者前面两处不改，把下一句中的is改为was）get（better） education abroad than at home. I know it is wrong for her to think so, but I don’t know how to change（her）mind. Would you help me?
Yours,
Li Lin

我看了几处。1.we have been chatting. Online 2.in the same age 3.unless l can find her 4.get better education 5.her mind