She has a headache because she______(看了太长时间的书).has been reading too long“看了太长时间”

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问题 She has a headache because she______(看了太长时间的书).

选项

答案 has been reading too long

解析 “看了太长时间”表示在一段时间内无停顿地、一直在看，故用现在完成进行时，此处填has been reading too long。

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