Answer: Please refer to Explanation
Step-by-step explanation:
Passive form is used when the subject is not the one to be emphasized but rather the action itself as well as the object. For example, instead of saying, " He stole my laptop", you say, "My laptop was stolen by him" if it is a Present Simple Tense. Using a Past Continuous Tense you would say, "My Laptop WAS BEING STOLEN by him" instead of, " He was stealing my laptop".
The corrective Passive forms for the following are,
2. John looked back. He thought he WAS BEING FOLLOWED.
3 Last time Tina went clubbing, her phone WAS STOLEN.
4 Police are investigating the robbery but nobody HAS BEEN ARRESTED.
5 As I'm writing this, three suspects ARE BEING QUESTIONED.
6 A press conference WILL BE HELD tomorrow.