_________ expressing her love for you, my sister has also expressed mine

Which do you prefer to use to keep in touch with your friends, QQ WeChat(微信)— WeChat, and I can share photos, ideas and feelings freely.

下列各句中,表达得体的一句是

opinions on the schedule, we finally reached on agreement.

A good friend is like a mirror. Don’t let a little agreement_____ a great friendship.