Rewrite the sentences in the passive voise 1. they were developing the glass industry over 100. 2.they had not invited her son to the conference. 3.they export shampoo all over the world. 4. he will send them a visa in day or two.

1. The glass industry was being developed over 100 by them.
2. The invited wasn't had her son to the conference.
3. The shampoo is exported all the world by them .
4. The visa was sent them in day or two by him .