Not until he failed the exam _______he had left his books untouched .
Ten years ago the population of our village was ______ that of theirs.
My mother took out the box that _____ the valuable photos of my family.
— I wonder _____ you’ll water this kind of flower. — Every other day.
straight on and you’ll see a post office . You won’t miss it .
– Do you know the West Lake in Hangzhou? – Yes, this is the third time that I ____ this beautiful city.