the bell rang at 9 o'clock(改成否定句.一般疑问句.特殊疑问句)

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the bell rang at 9 o'clock(改成否定句.一般疑问句.特殊疑问句)

the bell rang at 9 o'clock(改成否定句.一般疑问句.特殊疑问句)
the bell rang at 9 o'clock(改成否定句.一般疑问句.特殊疑问句)

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

The bell didn't ring at 9 o'clock.
Did the bell ring at 9 o'clock?
What time did the bell ring?