Which sentence has the most formal style?
A: Don't send anything off until you're told to do so.
B: Please await instructions before dispatching items.
C: Please wait for instructions before sending items off.
D: When they tell you to send them off, you can start to do it.
                    A: Don't send anything off until you're told to do so.
B: Please await instructions before dispatching items.
C: Please wait for instructions before sending items off.
D: When they tell you to send them off, you can start to do it.
举一反三
- Will you please send us your prices for the items ___ below?
 - After you order your items what you can do is to wait for your items to be arrived.
 - Always ______ your computer when you've finished. A: switch off B: put off C: take off D: send off
 - Don’t forget to turn off the light, ______ A: will you B: B. do you C: C. won’t you
 - Do you know the following items which can’t be recycled?
 
