问题
选择题
While watching TV, ____.
A．the doorbell rang
B．the doorbell rings
C．we heard the doorbell ring
D．we heard the doorbell rings
答案
答案：C
搜题请搜索小程序“爱下问搜题”
While watching TV, ____.
A．the doorbell rang
B．the doorbell rings
C．we heard the doorbell ring
D．we heard the doorbell rings
答案：C