Does your uncle often go sailing-No，_______．He doesn’t like water sports.

no life has been found outside the earth, but while some scientists areactively searching for living things in outer space, others firmly believethere ____

There is a new problem involved in the popularity of private cars________road conditions need________

In a Han Dynasty tomb, they found some precious jars and vases, _______ are valuable

Do you doubt ____ he’ll be fired by the school? — No, not a bit. But I doubt ____ he will bury himself into study.