Look!Agroupofstudentsareplayingtheviolinthere,

問題詳情：

 Look! A group of students are playing the violin there, _____ their teacher as a conductor.

   A. in front of them stand            B. in front of whom stands  

C. in front of whom stand          D. in front of them stands

【回答】

B

知識點：介詞

題型：選擇題