Bill, would you like to go camping sometime this month? ——Probably just the two of us

How do you think he managed to improve hisEnglish in such a short time—______ four hours on it every day

People ____ more and more useful things to protect the earth since Earth Day was started.

Is this the house_______Abrabam Lincoln wasborn

all know, Jack isexperienced _____ the problem of this kind