Rewrite the following sentences without changing their original meanings

1. All his friends will see him off at the airport ( Passive voice )

=> He....................

2. The question was so diffcult that no students in my class could answer it

=> The question was too.................

3. In the middle of our lunch there was a knock at the door

=> When..................

4. I suddenly heard a loud bang during my dinner

=> When...................

5. Shakespeare wrote that play in 1450

=> That play.................

6. It is six months since Mary last wrote to me

=> Mary hasn't ...............

7. Nobody painted this house again

=> This house.................

8. She last watched that performance in 2008

=> She hasn't...............

9. It took him three hours to do the crossword

=> He spent...............

10. She spent two hours closing the door

=> It took...................

11. The robber made her give him money

=> The robber forced.................

12. I advise you to eat lots of fruits because it is good for your health

=> You'd better..................