create,knock,divide,below的过去式和过去分词是什么?

create,knock,divide,below的过去式和过去分词是什么? knock down 原句是we have to get out and knock down doors to create opportunities能否另外再造个句子 knock knock knock knock knock knock create create create create create create Knock!Knock!Knock!歌词 knock on;knock at;knock over;knock knock off和knock knock into ,knock down