There are still several unanswered questions ______ with the accident.A、connect

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问题 There are still several unanswered questions ______ with the accident.

选项 A、connect
B、to connect
C、connected
D、connecting

答案 C

解析本题考查动词的用法。该句为there be句型， several unanswered questions是宾语，句中缺乏的是questions的后置定语；connect与questions为被动关系，应用-ed形式。该句意为：还有许多关于事故的问题未被解答。

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