Food supplies may ________ towards the end of the trip, so we can’t waste any food.

A. run out   B. run up    C. run in    D. run away

 

A

本題考查固定短語。run out“用光、花光”,無被動語態(tài);run up“豎起,升起”; run in意為“順便探訪”;run away意為“逃跑”。故答案為A。

 

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