1. It is important to stay hydrated during hot weather. 2. It is raining heavily outside. 3. It is common for people to feel nervous before an interview. 4. It is my turn to speak next. 5. It is a fact that exercise improves mental health. 6. It is difficult to understand why she left so suddenly. 7. It is always fun to watch a good movie on the weekend. 8. It is not easy to learn a new language..