Every year a flood of farmers arrive in Shenzhen for the money-making jobs they before leaving their hometowns.A.promisedB.were promisedC.have promisedD.have been promised
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D解析试题分析：由时间状语before leaving their hometowns即可确定用现在完成时态，句意是每年有大量的农民工来深圳打工，在他们离家之前就已经被寄予希望。故选D。考点：考查时态。点评：此题考查的是before短语做时间状语，句子用完成时态，这是常考内容。