1. protecting ---> to protect (help + to V)
2. cleans ---> cleaned (Câu đang ở dạng it was chia qk hết)
3. for ---> to (nếu dùng for thì phải dùng relaxation)
4. bored ---> boring (bored dùng cho người)
5. be eaten ---> would have eaten
6. does --> did (last night chia quá khứ)
7. why ---> what (why=what ...for)
8. have been ---> had been
9. fascinating ---> fascinated
10. sending ---> to send
11. with ---> to ( talk to somebody)
