1 be eaten

2 eat

3 be used

4 was used

5 will be used

6 will use

7 will be sent

8 must be sent

9 are( usually) sent

10 were sent

11 will be sent

12 were printing

13 haven't printed

14 are called

15 are fed

16 will be fed

17 were fed

18 fed

19 haven't fed