We can send and receive email very quickly thanks to the internet

1 we can send and receive email very quickly thanks to the internet
=> the internet enables                                        very quickly
2she was working as a volunteer in south africa. She met her old friend
=>she met her old friend                                        south africa
3 she stared teaching E here when she graduated from university in 2013
=>she                                              in 2013
giải thích