When upgrading the room, we should never pay the extra charge.
举一反三
- When shopping, we should pay attention to ______.
- The room attendant should never touch the banknotes or documents on the desk when cleaning the guestroom.
- You have to pay a(n)premium for express delivery. A: extra charge B: extra price C: extra tip D: extra bonus
- We should especially pay attention to ( ) when making a dinner reservation.
- When we use SA in the classroom teaching, we should pay more attention to the _______of the language._