利用录音机不可以进行的操作是()。
A.给一段音乐加入背景音乐
B.录像
C.合并两段音乐
D.删除一段音乐的前10秒
参考答案:B
My sister doesn't know when she takes her friend's party. [ ]
A. how to wear
B. what to wear
C. why to wear