Замени выделенные слова местоимениями how old is lulu?

hello my  dear friend.  i'm all  good.  engaged in  learning,  sports,  go out with  my friends.the parents  are  good,  they  send  you greetings.  i miss  you,  for those times  when  we were walking  along, waiting  until  you can  come.  good luck and  all the best.  goodbye.

1. she wasn't invited to the party (by them).

2. the windows weren't left open (by me).

3. the light wasn't turned off (by them).

4. some friends has been invited to tea (by me).

5. an english book has been given to me (by her).

6. has the letter been written yet?

7. a lot of interesting things have been told to us (by them).