How often to the dentist？A、you go toB、do youC、do you go

听力原文：How often do we need to change the oil in the car？ （A) Every 3 months or every 3,

—Will you go fishing with me this weekend？ —Sorry, ______. Im going to see the dentist.A．I

How often（)to the dentist？A. you go toB. do you goC. do you

I want to go to the dentist, but you ______ with me.A、need not to goB、do not need goC、ne

According to the writer how often should parents

I ______ to know how often the bus runs during ru