—_did the bell ring? — w...

—_________did the bell ring?

—________ we were having dinner，the bell rang.

A.when； when B.when； while

C.while； while D.while； when

B 【解析】试题分析：句意：---铃什么时候响的？---当我们正在吃晚饭的时候，铃响了。此题考查特殊疑问词，when什么时候；当……时候。while当……时候，常和进行时一块连用。根据句意，应选B。考点：考查特殊疑问词和连词。

考点分析：

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—_________did the bell ring? —________ w...