5个句子，英语翻译高手速进！急急急！拒绝软件翻译！现等~

鉴于你没有说时态的要求，这里统一用过去时了，需要改动的话，自己改一下动词的形式就行了
He attached his name to the document.
He attached importance to my words.
He attached himself to the mountaineering group.

继续翻：
These boys is playing jokes on John.They take his shoes gone into hiding that he can't find them.
They often play jokes on each other.

He attached his signature to the document.
He attached great importance to what I said.
He attached himself to the mountaineering group.

These boys were playing jokes on John.They hid his shoes and he couldn't find them.
They often play jokes with each other.

He attached his signature to the document.
He attach my word to his mind.
He attach to the Hiking Team

the boys play a joke on John, hide John's shoe and making he can't find it.
they always play jokes on each other.