Tick all gramatically correct sentences:

At the weekend Mary always helps her grandparents around the house.
Eduardo's wife tells her husband slow down as he prefers to go over the speed limit.
I study in an awful group as my groupmates never help me solve mathematical problems.
Judy's son won't let his mother to have the remote.
Mark's parents want their daughter study medicine.
Mary often helps her mother cook dinner.
Mike's parents never make him do his homework.
My boss sometimes lets me to leave work earlier.
My parents have me to send them sms if I stay out late.
When Jack was a teenager his parents didn't let him go to night clubs.

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