Thoughgreateffortshavebeen     ontheirstudy,Anniestillc...

問題詳情：

Though great efforts have been      on their study, Annie still can’t make any improvements , which makes her parents greatly ______ .

A. made ; disappointed      B. done ; disappointing

 C. taken ; disappointed      D. given ;disappointing

【回答】

A

知識點：非謂語動詞

題型：選擇題