Question

—What’s the name of the song?
—Yesterday once more. It         when I was a student.
A. sang                
B. was singing             
C. was sung

Answer 1

C

解析試題分析：句意：--這首歌的名字是什么。----昨日重現(xiàn)，當(dāng)我還是一個學(xué)生的時候它就被唱。Be done 表示被動語態(tài)，根據(jù)句意故選C.
考點：考查動詞時態(tài)的用法。