运用所给单词的正确形式完成句子。
【小题1】Fresh air is (benefit) to your father’s health.
【小题2】Do you feel a sense of s (satisfy) at the end of the working day?
【小题3】Praise acts as an to the players, and therefore they will feel and get the to continue and improve their performance. (encourage)beneficial
网友回答
(答案→)beneficial
解析：
【小题1】beneficial 本题是固定词组be beneficial to…对…有益;
【小题2】satisfaction 本题名词satisfaction放在a sense of后面，表示满意感。
【小题3】encouragement encouraged courage
第一空使用encouragement放在an的后面。第二空使用形容词encouraged与系动词feel连用形成系表结构；第三空courage是名词勇气的意思。