People Garden Quiz

[CNB]

Stuck on last 3 questions..any help would be greatly appreciated.
Q1. What can half the world's beetles do?
a. Fly b. Whistle c. Change colour

Q16. About two million bacteria may be carried at any time by which creatures?
a. Cats b. Houseflies c. Goldfish

Q17. Which plants smell mosr like beer, claim Cerman Scientists?
a. Basil b. Honeysuckle c. Roses

Thanking you all in advance for any assistance offered.

[boxtops]

1 - I'd say fly
Q16 - Houseflies