6. Each of these students have done their work.
7. Not only he but also his friends likes this film.
8. The United States consists of 50 States.
9. Why are the police standing over there?
10. The English is sometimes friendly people.
11. A number of stores closes today because of the holiday.
12. Five minutes aren't too long to wait.
13. Everyone in the houses get serious damage in that fire.
14. Three-fourths of the pizza have already been eaten.
15. Mumps usually causes a mild fever.
the following sentences Underline and cor