Grammar exercises

1. A unit
2. An offer
3. An advertisement
4. An honest idea
5. A U.S. citizen
5. A hundred
6. An estimate 
7. An inovation
8. An hour
9. A university
10. An umbrella
11. A unicorn

DIA 4. S1 is wrong.
DIA 5. S4 is the best
DIA 8. S1 and S3 are bad English
DIA 10. S1 and S2 are wrong
DIA 14. S3 is the best
DIA 15. S1 and S2 are the best
DIA 18. S2 and S5 are wrong
DIA 19. S1 and S2 are wrong
DIA 20. S1 is wrong

1. Every year hundreds of exchange students come to study in the Netherlands.
2. House prices will definitely rise over the next few months.
3. Students typically get their degree before the age of 25.
4. As of this week the shool's website is only acceissible to authorised users.
5. During exam periods student typically drink at least seven cups of coffee a day.
6. Most people probably go to the dentist once a year.
7. A large number of people tpically watch at least eight hour of TV a week,
8. In the Netherlands trains are hardly ever exactly one time.