Question

The house is finished at last. All their hard work has _____.

A．paid back

B．paid off

C．paid up

D．paid for

Answer 1

B

短语辨析。A归还；偿还；B付清；努力得到回报；集合句意可知B正确。句意：房子终于建好了。所有的努力工作都得到了回报。