问题
选择题
Though ____ many times, the song still sounds as nice as before. [ ]
A. it was heard
B. hearing
C. heard
D. to be heard
答案
答案：C
搜题请搜索小程序“爱下问搜题”
Though ____ many times, the song still sounds as nice as before. [ ]
A. it was heard
B. hearing
C. heard
D. to be heard
答案：C