We can see only one of the doors ______.

It may not be a good idea. But before ____is put forward, we’ll make do with it.

Never before _____such a wonderful movie _____this one[ ]

Even though human cloning is causing a lot of anxiety, it is ______ good news for Faye Wilson, ______ 41-year-old saleswoman who cannot have a baby.

Why is it _____ he can’t get along well with his classmates?