Nowadays many people travel across China ________ high-speed trains.
on behalf of
by means of
at cost of
in terms of
I shall take you back to Beijing _____ you are well enough to travel.
The writer was always looking for suitable _____ to use in his next story.
He gave me some very _____ advice on buying a house.
You will get to the church more quickly if you take this _____ across the fields.
The policeman stopped him when he was driving home and_____ him of speeding.