--You don't look so well, Mary. What's the matter with you? --Why?___________.
Only when you ______ what you have learned to practice ______ say you have made it.
Our team’s success was ________ the efforts of Mr. Mark, who is ________ arrive here in ten minutes.
________ several times, Bill made up his mind not to watch late night movies any more.
One must have a wide range of knowledge to ________ the changing market.
— I phoned you at 7 yesterday evening but nobody answered. — Oh, I ________ my dog in the park then.