EversincePicasso'spaintingwentonexhibit,there

問題詳情：

       Ever since Picasso's painting went on exhibit, there ______ large crowds at the museum every day.

    A. is            B. has been      C. have been        D. are being

【回答】

C

知識點：現在完成時及其被動式

題型：選擇題