Сделайте пожалуйста тест. Заранее спасибо..

1 are used

2 be kept

3 were kept

4 are keeping

5 were lost

6 lost

7 sign

8 be signed

9 was signed

10 signed

11 was signing

12 hasn't signed

13 water

14 be watered

15 were watered

16was watering

17 haven't watered

18 be watered

19 finish,will water

20 am watering, didn't water