1. has
2. is
3. is
4. likes
5. never bites
6. barks
7. is
8. doesn't like
9. often plays
10. becomes
11. just sleeps
12. are
13. doesn't let
14. often takes
15. is sometimes
HTD
+) S+ do/ does + V
-) S+ don't / doesn't + V
?) Do/ does + S + V
I / you / we / they số nhiều V nguyên
She / He / it số ít V thêm s/es
----------
it + is
are : số nhiều