He was sitting at the piano an old song. C A sing B sings C singing D sang​

С, т.к он пел в настоящем временем(окончание ing)

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

2)the windows were not left open by me.

  3) the light wasn't turnud off by them.

  4)some friends have been invited to tea by me.

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

  6)have the letter been written yet?

  7) we have been told a lot of interesting things by them.

1. i like reading fairy tales.

2. she is a teacher.

3. my friend uses computer every day.

1. i don't want to go for a walk.

2. she isn't hungry.

3. we are not thirsty.

1. is he reading a book?

2. are you a student?

3. are we good friends?