every morning Mr.Smith takes a to his office A.20 minutes' walk B.20-minute walk同上 我觉得答案是B ,不过我记得这题以前做过,应该是B啊.
问题描述:
every morning Mr.Smith takes a to his office A.20 minutes' walk B.20-minute walk
同上 我觉得答案是B ,不过我记得这题以前做过,应该是B啊.
答