—I still haven’t decided whether to go or not.
—But your time is running out. Please make up your mind ______ it is too late.
A．whenB．sinceC．untilD．before
D
本題考查連詞。第二句意：可是你時(shí)間不多了。請?jiān)跒闀r(shí)太晚之前作出決定。 before在……之前。
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