Directions: This question presents a sentence, all or part of which is underlined. Beneath the sentence you will find five ways of phrasing the underlined part. The first of these repeats the original; the other four are different. If you think the original is best, choose the first answer; otherwise choose one of the others.

The Airdrie Airport was used by the RCAF until 1946, when the property was bought by Don Sutherland, who converted the runways to racetracks and used the hangars as garages.

when the property was bought by Don Sutherland, who converted the runways to racetracks and used the hangars as garages

when the property bought by Don Sutherland converted runways to racetracks and used the hangars as garages

when the property was bought by Don Sutherland and converted the runways to racetracks, and the hangars to garages

after which the property was bought by Don Sutherland who converted runways to racetracks and used the hangars like garages

because after that the property was bought by Don Sutherland, who converted runways to racetracks and used the hangars like garages