–WhereisMr.Liatthemoment? –He
來源：國語幫 1.64W
問題詳情：
– Where is Mr. Li at the moment?
– He ____ in the classroom just now. He ____ be there now.
A. heard to sing, may B. was heard sing, must
C. heard sing, must D. was heard to sing, may
【回答】
D
知識點：動詞語態
題型：選擇題
