I was listening to ___wonderful music when there was __knock on the doorA:a,\ B:the;the C:a;a D:the,a .才女们,最好在明天给我一个答案,因为实在很急,

I was listening to ___wonderful music when there was __knock on the doorA:a,\ B:the;the C:a;a D:the,a .才女们,最好在明天给我一个答案,因为实在很急,
I was listening to ___wonderful music when there was __knock on the door
A:a,\ B:the;the C:a;a D:the,a .才女们,最好在明天给我一个答案,因为实在很急,

I was listening to ___wonderful music when there was __knock on the doorA:a,\ B:the;the C:a;a D:the,a .才女们,最好在明天给我一个答案,因为实在很急,
答案C
这里的考点是冠词
第一个虽然音乐不可数,但是,这里因为前面有形容词,所以可以将音乐看作是可数的,需要a,
第二个因为knock表示敲门声,k是辅音发音,所以用a
关于第一个的类似问题
breakfast是早饭,不可数,
但是,可以说,a,big,breakfast,一顿丰盛的早餐