The experiment shows that proper amounts of exercise, if regularly, can improve our health.
It seemed that the boy who you _____ didn’t show any interest in what he was reading at all.
—Is everybody here? —Not yet.... Look, there _____ the rest of my students!
You _____ have bought the book for me, but thank you all the same.
____________for children, the album became popular with parents __________it came out.
The old gentleman is considering _________he will move to New York with his daughter and son-in-law or live alone at home.