Present Simple / Present Continuous

1. In my opinion, ice cream ( taste ) delicious. That's why I eat it every day

2. The joke you just told me wasn't funny. That is why l ( not laugh )

3. I ( not understand ) science. It's too difficult

4. I'm single. I ( not have ) a girlfriend

5. You can't use this elevator at the moment. It ( not work )

6. I'm surprised that she is a model. She ( not look like ) one

7. I'm awake now. I ( not sleep )