( What I want to know) is (where you found my book.)
主语 表语
2. ( What they are interested in) is (how much money they can raise)
主语 表语
本回答被网友采纳(What the researchers in the study hadn't expected) was (that this one activity raised the women's physics grades from the C to B range).
(What worries me anyway) is (how we are going to get everything done in the time).