Is this the museum you visited last Sunday?
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.
-- What’s the time now? --- 8:00 a.m. It’s time ___________.