Do you often hang with your friends on weekends?
All passengers ________ go through safety check before they take a plane.
My father didn’t give up smoking _______ the doctor told him to do so.
Nowadays even the flats in small towns are much ________ than they used to be.
---________ has your English teacher been to England?---Three times.
The APEC meeting was held ______ November , 2014.