Rewrite the sentences in the passive where possible 9) We were discussing the book when the author arrived 10) Students were checking the exercisers while the bell was ringing 11) Yesterday I asked my teacher to help me 12) Tea...

Rewrite the sentences in the passive where possible 9) We were discussing the book when the author arrived 10) Students were checking the exercisers while the bell was ringing 11) Yesterday I asked my teacher to help me 12) Teacher gave me a good mark 13) The boys will paint the roof of the house 14) Tom gave Nick a book for his birthday 15) A boy showed her the way 16) Our mother tells us stories every evening 17) The elephant broke the branch of the tree 18) Helen was washing the dishes and Betty was listening to the music 19) I have just watered the plants 20) They have been waiting for Tom since morning