How long does it take you to go to school from home?不能回答it takes me 20-minute walk. 这句话的回答,只能是It takes me 20 minutes,上述错误回答,单复数用错了,语法也有问题。因为这句话询问的是从家里到学校的耗时,回答耗时即可。it takes me 20-minute walk的回答方法,是错误的。正确、完整的回答是:it takes me 20 minutes to go to school from home. 或者:20 minutes. 或者:It takes me 20 minutes.