几条英语问题,好的话会加分A:Yesterday I __________ an E-mail from a frien

几条英语问题,好的话会加分
A:Yesterday I __________ an E-mail from a friend.Do you know the ___________ of “@” in her E-mail address?
B:It’s a symbol in E-mail address.It means ‘_______________’.
A:In information times we can find great changes in the use of languages.
B:People didn’t use ‘@’ in the keyboard ________ the Internet appeared.
A:_________can we pronounce it and what is it used___________?
B:We can pronounce it ‘__/______/___’ .It separates(分开) the user’s name from the domain（地域） name.
A:I have __________ a lot from you.Thanks a lot.
B:___________ ______________.