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Grammar JJ???

7.While everyone continues to hope for their survival, it is unlikely that the astronauts could have made it back to the shelter before the power plant exploded.
A)could have made it back to the shelter before the power plant exploded
B)were making it back to the shelter before the power plant exploded
C)were able to make it back to the shelter before the power plant explodes
D)have been able to make it back to the shelter before the power plant will explode
E)could have made it back to the shelter before the power plant would have destroyed them
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my guess: A
what is the key?
Sur la place chacun passe, chacun vien, chacun va; droles de gens que ces gens-la! 左岸的对面依然是左岸,跟遥远相对的依旧是遥远。

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It is tough !, I would like to try E.




[此贴子已经被作者于2002-11-15 9:36:25编辑过]

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me A too.  "could" is more concise than "be able to"

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is it C?

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呵呵,各种答案都有。请大牛出马吧。。。呵呵。。。
Sur la place chacun passe, chacun vien, chacun va; droles de gens que ces gens-la! 左岸的对面依然是左岸,跟遥远相对的依旧是遥远。

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really tough

我选A,unlikely用虚拟语气吧,

PS:这道JJ是那里来得?

[此贴子已经被princess于2002-11-17 1:45:19编辑过]

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我感觉选C
unlikely已经摆出不可能了,后面不应该再用虚拟语气
be able to表示能够做某事

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我觉得这题选A
这题我认为的关键不在于COULD,还是BE ABLE TO ,而在于EXPLODED OR EXPLODES。
这题是哪里的?
人能走多远,见识就有多远!

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answer is A

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