Myfriendtoldmethatma的精選

問題詳情：Myfriendtoldmethatmanyfactoriesinhiscity________toclosedownbecauseofincreasingcosts.A．havebeenforced    B．haveforced    C．hadbeenforced  D．hadforced【回答】C知識點：動詞時態與語態題型：選擇...