-Whose ruler is it? -Maybe it's____。 A. Peter B. Peters C. Peter's
---What’s the matter? --- I have .A. an apple B. a sore back C. many friends
A lot of vegetables help us to keep in good .A. habit B. health C.body
Jack eats meat once twice a month.A. or B. and C. but
--How often do you surf the Internet? ---- .A. Three times a week B. A week three times C.Three weeks a time
—Is this room _____ ? —Yes, it’s theirs.