—You want to know about the value added tax, don’t you？—（)

If you want to know the train schedule, please ___

If you want to know the train schedule,

If you want to know more details about these buildings, you can go to the sales office and

If you want to ring back, you have to ______.A．redial the telephoneB．know the free telepho

The less clear you are about what you want to do

If you want to know the train schedule please ________ at the booking office.A) ac