------I will hold on to my dream _________ there are so many difficulties. ------Never give up, and you will be successful.
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.