Hello who can help me with this exercise? :) 10 points!!

Complete the sentences with the correct passive form of the verbs in brackets. Type the answer.

1. Currently, important genetic research _________________(do) in this laboratory.

2. By the time it closed, the art exhibition __________________(see) by thousands of people.

3.The latest company report ______________(not see) yet.


4. At the same time that the audience was beginning to fill the arena, the rock band ______________________(fly) there by helicopter.