Make these sentences passive. 
1. They speak French in France. 
2. Mary washed the dishes. 
3. The teacher answered the questions. 
4.The teacher has explained these rules to us. 
5. They are translating this article now. 
6. This mine will produce large quantities of coal next year

1French is spoken by them in France.

2The dishes was washed by Mary.

3The questions was answered by teacher.

4These rules have been explained to us by the teacher.

5This article is being translated now by them.

6 Large quantities of coal will be produced with this mine next year.