some years later robots can walk with two legs.改为否定句

some years later robots can walk with two legs.改为否定句 This dog can walk on two legs.改为否定句 it can walk ___ two legs .A.on B.with she has two long legs.怎样改为否定句 1.They can walk with their hands.（改为改为否定句) What can climb with four legs in the morning,walk with two l legs,dog,walk,pet,on,can,my,two连词成句 We can walk there.怎么改为否定句 The baby can walk by hinself 改为否定句 some two-and-a-half years and two novels later,^^^^^^ what has two legs but can't walk?翻译 What has two legs but can\'t walk?答案是什么