They are both grammatical. (1) has an omitted "that": "... ".
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Anonymousa. In 1) Why "trust" does not need an object ?The pattern is "to trust that ..." with "that" omitted, as I mentioned. It is open to debate whether "trust" is transitive with a that-clause (or reduced that-clause) as its object, or whether the structure is explained in some other way. This question, which applies to many other verbs too, has been disc