研究表明当人们花时间帮助别人时,他们会感到快乐Studies show that people will feel happy when their time is（ ）（ ）others.在学校呆了一天后,户外娱乐活动可使孩子们得到放松.Outdoor（ ）will（ ）children after a day’s study in school
问题描述：
研究表明当人们花时间帮助别人时,他们会感到快乐
Studies show that people will feel happy when their time is（ ）（ ）others.
在学校呆了一天后,户外娱乐活动可使孩子们得到放松.
Outdoor（ ）will（ ）children after a day’s study in school
答
Studies show that people will feel happy when their time is（spent ）（on ）others.
Outdoor（activities ）will（ relax ）children after a day’s study in school