Ex4. Write sentences. Use the correct form of have to: 1. I/tidy my room / every Saturday. 2. We/not learn karate / at school. 3. Frank/take his dog for a walk / every day? 4. I/not do any shopping / on Saturdays. 5. She/visit her aunt / every Monday.

Alright, let's create sentences based on the given prompts, using the correct forms of 'have to'. 1. I *have to* tidy my room every Saturday. 2. We *don't have to* learn karate at school. 3. *Does* Frank *have to* take his dog for a walk every day? 4. I *don't have to* do any shopping on Saturdays. 5. She *has to* visit her aunt every Monday. **Explanation:** * Sentence 1 is a positive statement using 'have to'. * Sentence 2 is a negative statement using 'don't have to'. * Sentence 3 is a question using 'does have to' because the subject is Frank (he). * Sentence 4 is a negative statement using 'don't have to'. * Sentence 5 is a positive statement using 'has to' because the subject is she.