The book you want is not ___now. I will let you know as soon as it is returned to the library.
John received an invitation to dinner, and with his work ________, he gladly accepted it.
You can only be sure of_________ you have at present; you cannot be sure of something _____ you might get in the future.
—Could you turn the TV down a little bit? —________. Is it disturbing you?
—Guess what! I have got A for my term paper. —Great! You ______ read widely and put a lot of work into it.
H1N1 control and prevention is ato China as well as the whole world.