Употребить глагол в соответствующей форме действительного или страдательного залогов
1) People … millions of fish in the North Sea. (to poison)
2) Millions of fish in the North Sea … . (to poison)
3) They … recently … redundant a lot of people at the plant. (to make)
4) A lot of people at the plant … recently … redundant. (to make)

1. poisoning

2. are being poisoned

3. haven't recently made

4. haven't recently made

1 poison

2 are poisoned

3 they have recently made.......

4 have been recently made