Complete the sentences. use past perfect. 1)by the time they wrote the 2)before my parents came 3)i didnt know about it 4)when i phoned my 5)when we arrived at the

1) By the time they wrote the text the lesson had already been over.
2) Before my parents came home I had done all my homework. 
3) I didnt know about it because nobody had informed me about it.
4) When I phoned my friend, he had already left.
5) When we arrived at the party, the drinks had already been served.