It's great helpful表达对吗?

It's of great fun.还是It's great fun.两个表达都可以吗? It's helpful to your__(healthy) 谁会这道题：It's helpful _____ y It's important and helpful ________. Great!You're helpful! ”It's a place of great interest "这个句子语法上对吗? 这句话对吗?Thanks for your concern.It's a great honor to be an em is it taste great?对吗还是tastes we find reading english stories helpful改为同义句it's helpful us? It's helpful ____(read) in the morning It’s very helpful me to read English magaznes 1/It's helpful ___ you to do something .