Smoking is not permitted in this office. A. You couldn't smoke in this office. B. Yes, you're a good friend C. You mustn't smoke in this office. D. Yes, I'd love to. Thanks.

18/50

Smoking is not permitted in this office.

You couldn't smoke in this office.

Yes, you're a good friend

You mustn't smoke in this office.

Yes, I'd love to. Thanks.

Giải thích

permit: cho phép

→ be not permitted: không cho phép = musn’t: cấm

Tạm dịch:

Bạn không được hút thuốc trong văn phòng này.

Choose C.