but.four.back.four.he（添.加.减）一个字母,使它成为一个新单词.

what has four legs one back but can not walk? four four four FOUR. we__ back home at four but.four.back.four.he（添.加.减）一个字母,使它成为一个新单词. 猜谜语 What has four legs and a back but can't walk? what has four legs and a back but can't walk what has four legs,a back and ywo arms but no body是个单词 I ____(come) home at four o' clock,but Jim_____(come) back at six o' clock. He will be back in four days I have no eyes and no ears.I have four four legs and a back,but I can't walk. you can sit on me.谜语 What has four legs,a back and two arms but no body?速,有人说是chair,可是胳膊在哪? what has four legs but no foot What has four legs,but one foot? What has four legs but cannot walk? Dinosaur H has four legs.(改成过去式)