来自刘东苏的问题
【Onlineshopping,whenproperly____,cansavealotoftime,moneyandenergy.A．doneB．isdoneC．havingdoneD．doing】
Onlineshopping,whenproperly____,cansavealotoftime,moneyandenergy.A．doneB．isdoneC．havingdoneD．doing
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2020-08-14 22:39