What makes her happy is ...
What cheers her up is ...
What delights her is ...后面得加逗号这些都不行吧能把完整的问题发出来吗？让他高兴的是，他找到了他丢失的笔盒What makes he happy is that he find his lost pen box.必须有个逗号To his delight, he found his lost pen box.