Lastyearafloodofworkersreturnedtotheirhometownforthemon...

問題詳情：

Last year a flood of workers returned to their hometown for the money-making jobs they ______ before leaving their working places in bigger cities.

A. promised    B. were promised

C. have promised    D. had been promised

【回答】

D

知識點：動詞時態與語態

題型：選擇題