重写句子：Hockeyisasportwhichispopularinmanycountriesaroundtheworld.(simplesentence)
In many counetries around the world, hockey is a popular sport.
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Veryfewpeopleunderstoodthiscontract,______wasveryobscure.
Havingdecidedtorentaflat,we________contactinghousingagenciesinthecity.