The teacher spoke of some writers and some books ________ we need to know.
—My brother is unhealthy. He eats vegetables. —You should tell him to eat more vegetables.
—Who is person in China? —I think Yao Ming is.
—Where did Helen go on vacation ? — She New York City.
—We can’t climb the mountains the bad weather. —What a pity !
—do you use the Internet ? —Two or three times a week.