4. Rewrite the sentences using Present Perfect Simple.

Here are the sentences rewritten in the Present Perfect Simple tense: 1. I **have gone** to a camp before. 2. She **has never tried** rafting. 3. They **have just arrived** at the campsite. 4. We **have already packed** our bags. 5. He **has never met** interesting people at camp. 6. Have you **ever seen** a famous theme park? 7. I **have just learned** how to put up tents. **Explanation**: * The Present Perfect Simple tense is formed using "have/has + past participle". * Adverbs like "never," "just," "already," and "ever" are placed between "have/has" and the past participle. * Questions are formed by inverting "have/has" with the subject.