помогитее пожалуйста 9 класс надо составить предложение

I was unhappy because I had lost my watch.My parents were tired because they had worked very hard.My friend was nervous because he/she hadn't studied for the test.We were excited because we had won a prize in a competition.You were  late because you had slept for a long time.The teacher was angry because he/she...hadn't slept for a long time.My parents were nervous because i had asked a difficult question.(Вроде как там сказано составить столько предложений, на сколько мозгов хватит, но это мой максимум)