2/3.
1. C (âm /ei/)
2. B (âm /ou/)
3. A (âm /e/)
4. B (âm /o/)
5. A (âm /ơ/)

4/16.
1.
? Does this river run through my home to un?
- This river doesn't run through my home to un.
2.
? Does your drawing class start at 8a.m?
- My drawing class starts at 8a.m

3.
? Do they enjoy collecting stamps?
- They don't enjoy collecting stamps.

4. 
? Do you do Judo every Tuesday?
- I don't do Judo every Tuesday.
 
Chúc học tốt nhá!