It’snearlyfouryearssinceIworkedinthatfirm.I

問題詳情：

It’s nearly four years since I worked in that firm. I ________ a band with other fellows.

     A. operated            B. had been operating           C. was operating           D. am operating

【回答】

D

知識點：動詞時態與語態

題型：選擇題