Throw 'something' into three questions
In the following sentence, is it right to say "Many scientists have thrown his theory into three questions" in order to provide further explanation about the problems associated with the thoery?
Many scientists have thrown his theory into three questions. First, his failure to gather enough evidence; Second,...
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And if you are serious about the question, no, it is not grammatically correct to say so.
It remains unclear as to what the meaning of the sentence is supposed to be, but in any case, if you are using plural of scientist, (scientists), you should also use plural when referring to it the second time. "--have thrown their theory"

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