Takehisa Tanaka t's shocking that two women could be in such a state [committed] this crime" is correct. Well, that is not possible, since you have too many verbs for the available clauses. I don't understand why you have bracketed 'to commit' in the original, Takehisa.
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Takehisa Tanakat's shocking that two women could be in such a state [committed] this crime" is correct.Well, that is not possible, since you have too many verbs for the available clauses.
Takehisa TanakaEither way, it's shocking that two women could be in such a state and commit this crime."That is OK, but it does not unite the two conditions as well as the original.
Takehisa TanakaBy the way, why "could" take past form?
Because it's describing the past event, or it's unclear that people can be that state?