A.helped
虽然世界贸易中心陨落了,但是曾经由于它而形成的世界经济还在运转.
定语从句中IT后接A表世界贸易中心过去的行为
SSiMe 的说法不妥,主句从句时态是要一致,但是这里请看清,主句：the world economy it ____ create continues.的谓语是continues,是现在时,而不是helped ,it helped create 是主句中套的定语从句.
英语单选1352：While the World Trade Center has fallen ,the world
3个回答
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