Irregular verbs

A Crossword

Solve the clues
1        2               
                   
    3      4    5           
             6        
   7              8      
          9           
 10      11                
       12    13            
14      15                 
                   
   16      17      18          
                   
19                     
20    21           22          
                   
                   
                   

Across:

1. understand
3. think
7. buy
8. go
9. keep
10. catch
13. bring
14. put
15. make
16. have
17. drink
20. lose
22. be

Down:

2. think
4. get
5. take
6. cut
8. write
10. can
11. hear
12. read
13. begin
16. hurt
18. know
19. sleep
21. say