问题描述：
YOU must ( ) more time （ ）how to
YOU must ( ) more time （ ）how to use computers.A.spend,learn B.spend,learning C.spend.to learn D.take,to learn 选那个及为什么选那个答案,
YOU must ( ) more time （ ）how to use computers.A.spend,learn B.spend,learning C.spend.to learn D.take,to learn 选那个及为什么选那个答案,
问题解答：
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