单选题 The weather forecast says there"s going to be a heavy storm here in two or three hours, so we have to hurry back home ______ it comes.

【正确答案】 A

【答案解析】[解析] 本题考查介词辨析。A项“在…之前”；B项“除非”；C项“虽然”；D项“直到”。代入提干，A项最符合题意。故选A。