Grammar - Active or Passive

Put the verb into the correct form, present simple tense, active or passive.

1. The problems __are_caused__ (cause) by the careless staff.
2. The staff __causes___ (cause) the problems.
3. The company is not independent. It _is_owned__(own) by a much larger company.
4. The goods _are_delivered__ (deliver) by the transportation company.
5. The school _cancels__ (cancel) the outdoor games because of the bad weather.
6. The park gates _are_locked__ (lock) at 6:30 p.m. every evening.
7. The house _is surrounded___ (surround) by trees.
8. The company _employs___ (employ) two hundred people.
9. Two hundred people_are_employed__ (employ) by the company.
10. Usually, some goods __are_destroyed__ (destroy) during the transportation process.