It won’t be too long before wea way to smooth away these difficulties.A. work outB. willwo

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(答案→)A. work out
B. willworkout
C. had worked out
D. are working out
解析：句意：过不了多久我们将能够找到解决这些困难的的方法。这里是句式it will not +some time+before过不了多久就会怎样。before引导的时间状语从句不能用将来时，因为主句用的是一般将来时，从句不可能用过去完成时，故选A。