When and where to go for the on-salary holiday _____ yet.
He has ____________ himself to be innocent (无罪的).
Everybody in our class admires Lily, for she has a __________ for playing the piano.
_________ you’ve got a good chance, you should make full use of it.
_________ is known to us all is that 2012 Olympic Games will take place in London.
If weather ________, we’ll go cutting.