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---- _________ will you fly to Beijing?---- In two days.
A、How long
B、How often
C、How soon
D、How much
【正确答案】：C
【题目解析】：how long多长时间；how often多久一次；how soon多久，多快，多少时间之后；how much多少根据回答In two days两天之内可知，问句问的是多少时间之后？