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

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,

How many teeth did the dentist take out?

According to the writer how often should parents

How many teeth did the dentist 【take out】?A.dig B

I ______ to know how often the bus runs during ru