—Do you know when we can go back home?
—Sorry, I don’t. Because of the heavy snow storm, highways have been blocked and flights have been __________.
A.put up | B.put off | C.taken off | D.taken up |
—Do you know when we can go back home?
—Sorry, I don’t. Because of the heavy snow storm, highways have been blocked and flights have been __________.
A.put up | B.put off | C.taken off | D.taken up |