PREP5的SC

凑字数 · 发表于 2021-8-24 21:09:48

A team of researchers reported that five endangered bird species had resumed nesting or investigated nesting boxes erected by volunteers having been ferried out to the island last month.

investigated nesting boxes erected by volunteers having been
begun investigating nesting boxes erected by volunteers, being
investigating nesting boxes, erected by volunteers,
were investigating nesting boxes erected by volunteers
investigate nesting boxes erected by volunteers, which

请问一下大家，这题为什么不选C呀，我觉得C和D的平行都不太完美，我理解的C的investigating可以和nesting平行，求个解释谢谢！

长丝弓 · 发表于 2021-8-25 08:22:42

以下讨论供你参考：
https://forum.chasedream.com/thread-1370457-1-1.html
https://forum.chasedream.com/thread-1307172-1-1.html
https://forum.chasedream.com/thread-1328548-1-1.html
https://forum.chasedream.com/thread-1337295-1-1.html

凑字数 · 发表于 2021-8-26 10:42:00

长丝弓发表于 2021-8-25 08:22
以下讨论供你参考：
https://forum.chasedream.com/thread-1370457-1-1.html
https://forum.chasedream.com ...

谢谢呀！

PREP5的SC

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