---Is that Sandy speaking? ---Sorry, she isn’t in now. She ______the cinema with her aunt.
--I can ___ believe my eyes. You are working so ____now. but I remember you didn’t use to. --People sure change. I have a dream of studying abroad, ____English-speaking countries.
–Why do you like climbing mountains? --Because they are there and climbing is _____thing I have ever done.
It is said the cost of medical care today is ten times as ____ as it was ten years ago.
– Look at these factories. I hate them. They____ many rivers here. --Yes. Something ______ to stop the pollution.
--David will never ____ though he fails again and again. --_______. So I believe both of you will succeed one day.