$XI$
1. under (gums: lợi miệng)
2. of
3. Before
4. between
5. out
$XII$
1. eat/have
2. because
3. teeth (cavity: lỗ)
4. Don't
5. take (take care: chăm sóc)
6. with
7. as
8. often
9. she
10. to (glad to:vui vẻ...)
Chúc bạn học tốt, hãy vote5*+CTRLHN+Cảm ơn :3