Teachers should allow their students to study ________ from the start, and it is bound to result in their ability to deal with problems on their own.
We must keep in mind the fact __________ China is still a developing country.
My brother _________while he ________his bicycle and hurt himself.
Larry asked Bill and Peter to go on a picnic with him, but ________ of them wanted to, because they had work to do.
Sarah looked at _________ finished painting with __________satisfaction.
—Do you mind my asking you a rather personal question? — Not at all.________.