When_____ that this was no ordinary fish,he tried not to damage it.a,realizing b,having realized c,he realized d,he has realized我觉得每个答案都可以,为什么其他不对?

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When_____ that this was no ordinary fish,he tried not to damage it.a,realizing b,having realized c,he realized d,he has realized我觉得每个答案都可以,为什么其他不对?
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When_____ that this was no ordinary fish,he tried not to damage it.a,realizing b,having realized c,he realized d,he has realized我觉得每个答案都可以,为什么其他不对?
When_____ that this was no ordinary fish,he tried not to damage it.
a,realizing b,having realized c,he realized d,he has realized
我觉得每个答案都可以,为什么其他不对?

When_____ that this was no ordinary fish,he tried not to damage it.a,realizing b,having realized c,he realized d,he has realized我觉得每个答案都可以,为什么其他不对?
C
因为从句时过去时（tried)
所以前面也是过去时,时态一致
所以是c

因为后半句是过去时，那么前半句如果是完成时也应是过去完成时

When_____ that this was no ordinary fish,he tried not to damage it.a,realizing b,having realized c,he realized d,he has realized When_____ that this was no ordinary fish,he tried not to damage it.a,realizing b,having realized c,he realized d,he has realized我觉得每个答案都可以,为什么其他不对? Do you know when_____(leave)? I know that NBA star YM wiil come to our city but I don't know when_____.Ahe will come to our city or notB/C he comes to our cityDhe comes请说明原因谢谢! THIS MEANS THIS THIS MEANS THAT怎么样 this that的复数 that or this this that的区别 Is that this watch? this way and that this,that的用法 This And That 歌词 When_____ your school day begin and when_____your first class Have you decided when_____?为什么用to travel This means that your personality This means that your personality this,that 指示代词 this 意为什么?that 意为什么? that this it的区别 that this these those用法.