Составьте предложения на со словами иначе; несмотря на то,что; хотя; вот почему; потому что.

1. You should work hard or you will fail your exams.
2. She lost her phone despite the fact that her pocket was closed.
3. He was preparing for tomorrow the whole night, that's why he looks sleepy.
4. They spent a lot of time together, because they love each other.