III. Open the brackets in the sentences using Past Simple, Past Continuous and Past Perfect.
1. After the children (to read) the book Robinson Crusoe they (to discuss) it in the class.
2. When I (to enter) the classroom, the student on duty (to clean) the blackboard.
3. Yesterday I (to watch) an interesting movie on TV.
4. By the end of the week Jimmy (to finish) the work in the garden.
5. When mother (to come) home, Mike (to read) a newspaper.