题目

点M（-1，5）向下平移4个单位得N点坐标是 . 答案：【答案】（-1，1）【解析】点M（-1，5）向下平移4个单位得N点坐标是（-1，5-4），即为（-1，1）． Tom is used ______________ for 30 minutes on the playground every night.       A. to run                   B. run                     C. to running           D. to runs