他买这本书的意图是提高英语水平。

His ___intent in buying this book was to improve his English.

她以坚定的眼神表明了自己要完成这项任务的决心。

She showed her ___intent to finish the task with a determined look.

她以极大的专注力投入这个项目。

She worked on the project with great ___intention.