—How many women doctors are there in your hospital?—______ them ______ over twenty.A.A number of; areB.The number of; areC.The number of; is
---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.