单选题Our school has used 

问题补充：

单选题Ourschoolhasusedcomputersinteachingfortenyears.Asaresult,notonly______,butstudentsbecomemoreinterestedintheirlessons.A.has teachers’ energy been savedB.saved was teachers’ energyC.teachers’ energy has savedD.was saved teachers’ energy

答案：

A解析这题考查倒装句的用法：not only放在句首，句子用部分倒装，助动词，be动词，情态动词放在主语前，选A。