tie and bond What is the difference beetween them ? Thank you for your help?

how to change my user photo I have tried to change my photo on my profile user. The new photo appears instead of the previous but, after a time, the previous photo is displayed again. I tried several time and the result is always the same. I don't know what I should do. Thank you for your help.

about a correction I did It is a polite form that you give in return to a polite form that you receive. For example: - a person apologizes to you because he passes before you in a shop door. She says " excusez moi" and you answer " je vous en prie" . That means you notice that the person is polite and that doesn't mind you. - a waiter brings you the dish you have ordered. You say "merci", the waiter answers "je vous en prie". That means that the waiter notices you are polite and he thanks you expressing the respect for him. You can often replace " je vous en prie" with "de rien", that is less formal, more familiar.

message with Italki Do you hnow how to find the messages that you sent to a person that you want to follow ?

language partner What is difficult, it is to find a regular language partner. When you have found one, your relationship must be maintained using interesting topics. What is your experience with Skype exchanges? How do you organise your session?

a charity gala I saw a show given by the band where my daughter plays trumpet. It was a charity gala to help the scientists to struggle against a disease called Miopathie (in french). In spite of this serious cause, there was a lively atmosphere due to the festive music played. Some of the band members played solo in front of the audience. A bit shy, a perceptible nervousness but always a big talent, each of them were applauded.

the door was lifted or the door has been lifted ? What is the difference between this 2 form ? Thank you for your help

human behaviour I have seen a tv report about the black friday. It was a crowd which waited for a shop opening. When the door has been lifted, the crowd rushed inside. Unfortunately, some of them situated in front fell down and have been crashed by those which were behind. I was shocked by the human behaviour which looked like at that of sheeps going toward their manger

might you help me? I have read this sentence: "There are lots of technologies that are changing things for us, but it is up to drivers." I don't understand " it is up to drivers" Thank you.