Thanks to the economical development, workers' wages have increased ________ as far as 200% in the recent three years.
You can never imagine what great difficulty I have _____ your house.
Before he went abroad, he spent as much time as he ____ English.
Mr. Wang made up his mind to devote all he could ____ his oral English before going abroad.
It was quite a serious accident, _________ caused by careless driving.
Jane was disappointed that most of the guests______ when she_______at the party.