As ______ mountains surrounding our village are turning much greener, they have become ________ home to a large number of wild animals.
You can take ____ you like here.
It is said that his carelessness ____ the terrible accident.
Tom as well as his friends ____ to visit our school soon after they arrive in Changsha.
By the time you ____ in, I ____ two letters.
To ____ your dream of becoming a scientist, you must work hard from now on.