Bahasa inggris guys,compound dan complex sentences dibuku PR

1. we should submit our work on time otherwise the teacher will be angry.
2. sylva relaxed in her room because she had finished growing a flowering plant.
3. If you open the box, you will find a surprising gift.
4. Gea was very sad because her cat died due to an accident.
5. many people still ignore the rule eventhough they they will be fined if they donlt oark in the proper places.