This learning game helps students to inductively review previously studied grammar.

1. Jackie is much more happy than Charles.
2. I'm sorry you have made a mistake!
3. I will give you a ring when I'll arrive.
4. How far does it take to travel to Boston?
5. They have lived in New York since 5 years.
6. I'm sorry you have made a mistake!
7. They were watching television when I telephoned.
8. Jane usually is on time.
9. I'm sorry you have made a mistake!
10. London is the most interesting city in the world.
11. We have been to Paris three times.
12. They enjoy exploring museums in their free time.
13. He has been working for 3 hours.
14. They bought three fishes at the market.