–How clean your car is! --Thank you. It _____ very often.
—There is with my kitchen fan. Can you help me?—OK, I will check it right now.
It’s time _____ class. You must _____ the classroom.
Lily is her pen, but she can’t it.
—Lucy, do you go to the park?—Three times a week.
---How do you usually go to school?----________