—I saw your uncle take a taxi to the airport.Why didn’t you drive him there?—I ,but my car .
If you _____ stop smoking , you can only expect to have a bad cough .
He suggested the person referred _______ put into prison.
“Where is it?” “Where is _____? I don't know what do you mean?”
Our math teacher, however, _____ speak English well.
Your mother, however, ____ say that to us that day.