# Knee ## Common expressions * bend your knees * hurt your knee * **scrape / graze your knees** * get down on your hands and knees * have / need an operation on your knee * (the water) came right up to your knees ## Exercise ### Common expressions 1. I **hurt** my knee quite badly while playing football. The doctors think I may ***need*** an operation on it. 2. Always remember to **bend** your knees when lifting heavy objects or you’ll hurt your back. 3. We had to wade across the stream and the water **came** *right up to our knees*! 4. I ***got*** down on my hands and knees and looked under the bed for my other sock. 5. Jamie tripped over a stone which was lying on the pavement and **scraped / grazed** his knees. His mother had to put a couple of plasters on them when he got home. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://james-ebook.gitbook.io/key-words-for-fluency/section-13-your-body/knee.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.