the bell rang at 9 o'clock(改成否定句.一般疑问句.特殊疑问句)
问题描述:
the bell rang at 9 o'clock(改成否定句.一般疑问句.特殊疑问句)
答
The bell didn't ring at 9 o'clock.
Did the bell ring at 9 o'clock?
When/ What time did the bell ring