Vi. change the following sentences using the past and future indefinite: 1. you must practise this text in the laboratory. 2. you must take your exam in english. 3. she can translate this article with out a dictionary. 4. they can’t meet them at the station. 5. the doctor must examine this child. 6. he must work systematically if he wants to know french well. 7. this child must spend more time out in the open air. 8. i can’t recite this poem. 9. you must take part in this work. 10. he can’t join the party, he is busy.

Past Indefinite:
1. You had to practise this text in the laboratory. 2. You  had to take your exam in English. 3. She could translate that article without a dictionary. 4. They couldn’t meet them at the station. 5. The doctor had to examine that child. 6. He had to work systematically if he wanted to know French well. 7. That child  had to spend more time out in the open air. 8. I couldn’t recite that poem. 9. You  had to take part in that work. 10. He couldn’t join the party, he was busy.
Future Indefinite:
1. You will have to practise this text in the laboratory. 2. You will have to take your exam in English. 3. She can translate this article with out a dictionary. 4. They will not be able to meet them at the station. 5. The doctor will have to examine this child. 6. He will have to work systematically if he wants to know French well. 7. This child will have to spend more time out in the open air. 8. I will not be able to recite this poem. 9. You will have to take part in this work. 10. He will not be able to join the party, he is busy.