It is not rare in_____ that people in ______ fifties are going to university for further education.
The way he did it was different ____ we were used to.
-- Is it necessary that he ____ to London but to New York? -- I think so, but the problem is ____ he has refused to.
Ten years ago the population of our village was ________ that of theirs.
Go and get your coat. It’s ________ you left it.
Three days later, word came _______ our country had sent up another man-made satellite.