Choose the correct options

1. There are only two [hundred|hundreds] visitors here.
2. "Academics" [is|are] the name of a new student café.
3. My parents already have two [daughters-in-law|daughter-in-laws].
4. General Motors [have|has] announced further cuts in production.
5. You have ten [ands|and's] in your last paragraph alone.
6. The jury [were|was] ready to announce the results of the competition.
7. My new keypal is a [seventeen-year-old|seventeen-years-old] school student from Italy.
8. I know the two [Joneses|Jones's] from Baltimore.
9. Economic [crisis|crises] usually go after economic booms.
10. To train well for the exam you should know the assessment [criterions|criteria].
11. I regret to say that the news for you [is|are] really bad.
12. Gymnastics [is|are] fun to watch, but this sport is traumatic.
13. Only thirty minutes [is|are] left to the end of this session.
14. Fifty thousand dollars [is|are] a lot of money.
15. One half of the employees [has|have] reached a retirement age.
16. One half of the students [have|has] individual study grants.
17. The contest jury came in and took [their|its] seats in the front row.