it's hard to stand ( )it's hard to stand ( ) A .to be keep to stand B .to keep to stand C .keeping standing D .to keep to be stood

it's hard to stand ( )it's hard to stand ( ) A .to be keep to stand B .to keep to stand C .keeping standing D .to keep to be stood it's hard to it's hard to tell~ “It's hard to die. It's hard to comments to me. It's easy to stand with the crowd.It takes courage to stand alone it's hard to make living It's hard to die怎么解释? It's hard to study English. 有没有It's hard to me it's very hard to p___everyone It's hard to say意思 but It's hard to 如题 it's so hard to say It's hard to tell!3Q It's hard to grow wheat. it's hard to find that kind It's hard to be a man.