A. What do you do on a hot and sunny day?

I just rest. ✔

​

B. 1. What time is it now? ✔​

      2. Yalmi,  hurry up!  It's time to go to school. ✔​(Punctuation)

     3. It's 7:35

​=> Your sentence has a correct grammatical structure, but this has the correct usage/ expression.​

   OK. I'm done.​