Mr.Richardwasdisappointedthatmanystudentshadsignedupfo...

問題詳情：

 Mr. Richard was disappointed that many students had signed up for his adventure course _____ at the last moment.

    A. left out         B. got out              C. passed out           D. dropped out

【回答】

D

知識點：詞組 短語

題型：選擇題