Here are the completed sentences with "too" or "either":

1. She can speak English very well, **too**.
2. Nam didn't come to the party last night, and Minh **didn't** either.
3. Hoa will buy some oranges and pineapples **too**.
4. They don't want to go out tonight, and we **don't** either.
5. The pineapples aren't ripe, and his friends **aren't** either.
6. I can't afford to go on holiday, I wish I **could** too.
7. I don't have time to read lots of books, I wish I **did** too.
8. I can't drive, I wish I **could** too.
9. My laptop is broken, I wish it **wasn't** either.
10. Hoa had a medical check-up yesterday morning. We **did** too.
11. Jane can't swim, and his brother **can't** either.
12. He can't swim, and Peter **can't** either.