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Every year a flood of farmers arrive in Shenzhen for the money-mak Every year a flood of farmers arrive in Shenzhen for the money-making jobs they ________ before leaving their hometowns.
A.promised B.were promised C.have promised D.have been promised 这题我知道选D 但是从they 开始是定语从句吧?先行词在句子里并没有做成分 怎么回事呢 (≧∇≦)