4. She ___(appear) to have a problem now. 5.Not many passanger planes ___(fly) faster than should. 8.He ___(work) very

1. She appears (Present Indefinite) to have a problem now. 2. Not many passanger planes fly (Present Indefinite) faster than should. 3. He has worked (Present Perfect) very hard this week. 4. It has been snowing (Present Perfect Progressive) since I got up. 5. All the lights have been switched (Present Perfect Progressive) on today.