Mikeusedtobeatopstudent,buthe
問題詳情：
Mike used to be a top stud
ent, but he______ behind since he lost himself in computer games.
A. fell B. has fallen C. was D. has been
【回答】
D
知識點：動詞時態
題型：選擇題
問題詳情：
Mike used to be a top student, but he______ behind since he lost himself in computer games.
A. fell B. has fallen C. was D. has been
【回答】
D
知識點：動詞時態
題型：選擇題
