【He can't be home now for I saw him() in the g】

问题补充：

He can be home now, for I saw him() in the gym just now.giving out/working out为什么不是giving out

答案：

work out 有“锻炼,健身”、“计算出”、“有结果”等意,give out为“发出（光 热 气...)、分发”等意,所以应是working out