A:proved
B:was proved
C:prove
D:has been proved
— I stayed up late to watch it yesterday evening.
根据课文回答问题。
本文的作者是____,他按照由____到____的观察顺序,把一只只____的小燕子呈现在我们的面前的。这些燕子给春天带来了____。
—Yes. At moment he is listening to music.