Complete the sentences with so or because. In some sentences, you need to add commas. 0. I am happy because today is my birthday.
1. The room is clean *** I cleaned it yesterday.
2. The weather was nice *** we went to the park.
3.I am not late ***I left home early.
4. They were hungry *** they went to a cafe.
5.I am sad al miss my friends.
6. My friends went abroad *** we don't meet now.