用适当的介词填空:( )he got to school,the bell was ringing.

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用适当的介词填空:()hegottoschool,thebellwasringing.用适当的介词填空:()hegottoschool,thebellwasringing.用适当的介词填空:()heg

用适当的介词填空:( )he got to school,the bell was ringing.
用适当的介词填空:( )he got to school,the bell was ringing.

用适当的介词填空:( )he got to school,the bell was ringing.
when
他要去学校的时候门铃忽然响了.