I/
1. the students were grade 7 have a excursion last year
2. Minh will be fourteen next month
3. Mr.Brown is teaching English now
4. She does aerobics every morning
5. She ate a lot of sweet some day ago, so she ill now
6. They are working on the farm at the moment
7. They will have a party tonight
8. She forgot do her homework yesterday
9. he often plays soccer after school
10. The dentist will fill the cavity in him tomorrow
II/
1. Filled - hurting
2. Do you need - feel
3. booking- forgo- will telephone
4. am going to buy
5. didn't want- left
6. gets up- brushes- got up- brushed- was
7. didn't eat- ate- drank
8. Did ( you ) go- went
9. were- had
10. didn't write- is phoning
11. isn't working
12. does ( it ) cost
13. Did ( you ) go out- went- didn't enjoy
14. will travel