Nouns-irregular plural

3. In order to keep children’s attention, we have to use a lot of (stimulus) ..... .
6. We have made some (analysis) ..... and achieved surprising results.
8. People who lived at the time had very hard (life) ..... .
9. She took all her (belong) ..... and left her boy-friend’s flat.
11. A number of unexplained (phenomenon) ..... were observed in the region.
12. She looked scruffy and her hair was so dirty that I was afraid that she had (louse) ..... .
13. The (diagnosis) ..... of the two doctors differed significantly.
15. What (criterion) ..... were used by you?
19. Do we have enough forks and (knife) ..... for everyone?
20. Most women are afraid of (mouse) ..... and they scream at their sight.
21. The leaf was covered with a thick layer of (larva) ..... .
22. One of my (tooth) ..... hurts, I must make an appointment with my dentist.

1. Scientists conducted a lot of (research) ..... into the subject.
2. I was surprised to see a couple of (goose) ..... in my garden this morning.
4. This blanket is extremely dirty, it must be covered with tons of (bacterium) ..... .
5. We have decided to buy two more (shelf) ..... for our bedroom.
7. I liked the hotel, but its (surround) ..... were horrible. There was litter everywhere.
10. Unfortunately none of his three (child) ..... survived the crash.
14. Though the police had (evidence) ..... that he was guilty, he was never arrested.
16. He gave me some (advice) ...., which I didn’t follow.
17. Needless to say the news of the celebrity’s death appeared in all the (medium) ..... .
18. He got the cold (foot) ..... at the last moment and backed out.