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.