She'd spent a lot of time finding out the things that the students disliked.(同义句）It had
网友回答
同学,很高兴回答你的问题
正确答案：It had ( taken ) her lots of time to find out ( what )the students disliked.
翻译：她已经花很多时间来找出学生们不喜欢做的事情.
解析：it takes sb.some time to do sth 某人花...时间做某事,本句的时态是过去完成时,与原句是同义句.
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
不明白请继续追问,
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
======以下答案可供参考======
供参考答案1:
it had cost her lots of time to find out what the students disliked.