I ----so far behind in men's 100-meter race that it seemed pointless trying to catch up.a. fell b. has fallen c. had fallen d. was falling标准答案是C, 为什么不是A? 为什么

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I----sofarbehindinmen''s100-meterracethatitseemedpointlesstryingtocatchup.a.fellb.hasfallenc.hadfalle

I ----so far behind in men's 100-meter race that it seemed pointless trying to catch up.a. fell b. has fallen c. had fallen d. was falling标准答案是C, 为什么不是A? 为什么
I ----so far behind in men's 100-meter race that it seemed pointless trying to catch up.
a. fell b. has fallen c. had fallen d. was falling
标准答案是C, 为什么不是A?
为什么

I ----so far behind in men's 100-meter race that it seemed pointless trying to catch up.a. fell b. has fallen c. had fallen d. was falling标准答案是C, 为什么不是A? 为什么
答案是A
因为 fell 与 seemed 是同时发生的:
== I fell far behind AND it seemed pointless-- - - .
或者:When I fell far behind ,it seemed pointless-- - - .
看,and 在这里 表示前後两个动作在时间概念上的并列,不分“先後”.when的解释是:两个谓语动词在同一个时间概念范围裏面.

fall动作发生在seemed前

fell/ran