I am truly happy to hear the news.这里为什么添tryly而不是true?

Lm truly happy to hear the news.为什么用 truly? Lm truly happy to hear the news. I‘m___(true)happy to hear the news. I am happy to hear the news 的意思 I'm( )(happy)to hear the good news 例：I am surprise to hear the news 不是surprising? I am ( ) when i hear the ( ) news. I was______very glad to hear the news A real B indeed C true They are happy to hear the news.to hear the news是什么成分 I'm so ______ to hear the good news A happy B happiness C sa I felt very sorry【to hear】the bad news为什么用to hear? Every body was happy to hear the exciting news.