1. напишите следующие существительные во множественном числе: aircraft, sheep, life, crisis, tax, lady, cargo, kilo, branch, month, thief, knowledge, information, radio, day, bench, goose, deer, house, woman-doctor .

1 Aircraft - Aircraft
2 Sheep - sheep
3 Life - lives
4 crisis - crises
5 tax - taxes
6 lady -ladies
7 cargo - cargoes
8 kilo -kilos
9 branch - branches
10 month - months
11 thief - thieves
12 knowledge - knowledge
13 information - information
14 radio - radios
15 day - days
16 bench - benches
17 goose - geese
18 deer - deer
19 house - houses
20 woman - doctor women - doctors