1. Having nothing to do at weekend is really boring.
- It's
2.Playing with sharp things is very dangerous.
- It's
3. Hanging out with close friends is really interesting.
- It's
4. Keeping medigioe in the locked cupboard is safe.
  - It
5. It's not easy to learn Japanese.

-Learning
6. It's very enjoyable to hang out with friends.
- Hanging