Yes, his opponents get a head start of three hours against Zaroff.
Organisers of the very first race report that all but 500 of the 15,000 places have now sold out, just a month after they were first released to the public. For anyone itching to be the very first winner, there are only days left to get your entry in.
1.- report because Organizers is plural.
2.- have because 500 of the 15000 is plural.
3.- They were
4.- I don't see any other verb disagreement.
Answer:
he should decide his own agenda and share it with the class
Explanation:
if he talks and not let anyone else talk, he could get a bad grade or somthing.