The group of experts ____ arrived to discuss the project.

• has

• have

Either the students or the teacher ____ responsible for organizing the event.

• are

• is

A bouquet of flowers ____ placed on the table.

• were

• was

Every participant in the contest ____ submitted their entry.

• have

• has

The data ____ analyzed thoroughly by the researchers.

• was

• were

Neither the professor nor the students ____ aware of the changes in the schedule.

• is

• are

The committee ____ divided on the final decision.

• was

• were

The percentage of people who support the law ____ increasing.

• is

• are

Mathematics ____ difficult for some students to understand.

• is

• are

One of the most interesting topics in the course ____ quantum mechanics.

• is

• are