Помогите пожалуйста II. Change the sentences from the active into the

Помогите пожалуйста II. Change the sentences from the active into the Passive Voice: 1. We turn on the light when it is dark. 2. The students finished their translation in time. 3.I shall finish my work at about seven o'clock. 4. Someone has opened the door. 5. They often invite me to their parties. 6. Where will they build a new library? 7. I wonder whether they will listen to him.