9. She wants a pencil, and I am, too
10. Lan likes oranges and Linh does, too
11. My brother can swim very well, and I can, too
12. All mothers love their children so much, and fathers does, too
13. She needs to relax more and you are, too
14. They will go to the cinema tomorrow, and he will, too
15. His father drunk a little wine, and he did, too
16. Yesterday my friends played many games, and I did, too
17. My mother was a good student and my sister did, too
18. She is very lovely, and her sister is, too

=> Giải thích:

Câu đồng tình:

(+) So + trợ V / tobe / KT + S

      S + trợ V / tobe / KT, too

(-) S + trợ V / tobe / KT + not, either

    Neither + trợ V / tobe / KT +S