По : transform the sentences given below into the past simple and future simple tenses, making all the necessary changes. 1.you may read a book now. 2.he can speak english very well. 3.they must read for their exam today.

1. You were allowed to read a book then.
2. He was able to speak English very well.
3. They had to read for their exam yesterday.
1. You will be able to read a book then.
2. He will be able to speak English very well.
3. They will have to read for their exam tomorrow.