问题补充：
How the song she sings sounds! I have never a better voice.
A. beautifully; sounded
B. beautiful; heard
C. sweet; listened to
D. sweet; sounded
答案：
A. beautifully; sounded
(答案→)B. beautiful; heard
C. sweet; listened to
D. sweet; sounded
解析：句意：她唱的歌听起来多么美妙！我从来没有听到过更好的声音。第一空中的词在句中作表语，该用形容词；第二空强调听的结果，该用heard，所以选B。
