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I. Find one mistake in each of the following sentences and correct them.
- It was first discovered ....................... several years ago that ....................... the former senator, once respected ....................... by many, were ....................... involved in extortion and other crimes.
- His job is quite important ....................... to the total function of the firm because ....................... he is responsible for maintain ....................... the records of sales and costs for all ....................... the departments.
- The whale died because ....................... the rescuers did not have ....................... proper ....................... equipment to support its weigh .......................
- It ....................... was her strong determine ....................... that helped her overcome ....................... the physical and emotional ....................... pain that followed her accident.
- David Cooper, whom ....................... was beaten ....................... last night my a group of skinheads, is being ....................... released from ....................... the hospital today.