Tick all grammatically correct sentences:

20 years ago most of people studied German as a foreign language.
A few people get As.
A lot of people study history at school.
Lot of young people take evening classes.
Most five-year-old children go to nursery school.
Most my friends got good grades in physics.
Most of students have to take exams.
None of my classmates failed exams.
None of students like exams.
Some of the students in my class are good at languages.

К сожалению, у нас пока нет статистики ответов на данный вопрос, но мы работаем над этим.