Hot _______the night air was, we slept deeply because we were so tired after the long journey.
Daniel's family____their holiday in Huangshan this time next week.
– I wonder how much you charge for your services. -- The first two are free ____ the third costs $30.
We can never expect____ bluer sky unless we create_____less polluted world.
She’ll never forget her stay there ________ she found her son who had gone missing two years before.
My uncle’s house in the downtown area is much smaller than ours , but it is twice _______ expensive .