题干
— Did you listen to the program yesterday?
— Yes. I can't believe I heard her singing ______ the radio.
A：on
B：in
C：by
D： For
答案(点此获取答案解析）
A
— Did you listen to the program yesterday?
— Yes. I can't believe I heard her singing ______ the radio.
A：on
B：in
C：by
D： For
