A：What do you think is the most useful invention？
B：（1） ______
A：Why do you think so？
B：Because it allows people to talk to friends，share photos，ideas and feelings freely．（2） ______
A：Haha…I also think it is a great invention．（3） ______
B：Yes．If I don't pass my math exam，I will write"I feel sad today．I didn't pass my math exam．"（4） ______ What about you？What do you like doing on WeChat？
A：I like sharing my birthday party photos，pictures of my new clothes and so on with my friends．It is fun．
B：But sometimes criminals use WeChat．（5） ______
A：That's true．So we should use it properly．
B：I agree．

A．Do you often write anything on WeChat？ B．Then many friends will comfort （安慰） me． C．WeChat of course． D．They try to cheat people out of money． E．It is fast，convenient and fashionable．