The flight to Guangzhou had to be________because of the heavy snow.
| A．put up | B．put out | C．put off | D．put down |
相关试题
—Scott, why do you like your music teacher, Mr. Cruise?
—Because he’s so _____________.
| A．interesting | B．easy | C．boring | D．late |
Bob and David are friends. __________ of them work in the art club as volunteers.
| A．All | B．Both | C．Each | D．Every |
Jenny, I can’t go hiking with you __________ I have to help my mum with housework.
| A．so | B．but | C．because | D．unless |
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