单选题I decided to follow 

问题补充：

单选题Idecidedtofollowittosee_________.A.where it was goingB.where was it goingC.what was it goingD.what it was going

答案：

C解析此题重点考查宾语从句的时态和语序问题，无论哪种句式结构充当宾语从句都要用陈述句语序，从句的时态要和主句的时态保持一致。因主句的谓语动词是过去式从句的谓语动词也要用相应的过去时态。