.We cannot figure out ____quite a number of insects, birds, and animals are dying out.
You're the only person ______I've ever met ______could do it.
He isn't such a man ______he used to be.
It there anyone in your class ______family is in the country?
Do you know the man _______?
Great changes have taken place in that school. It is no longer _______ it was 20 years ago, _______ it was so poorly equipped.