—This is ______ eraser.—______ her eraser.A. a; It’s B. an; Its C.an; It’s
—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.