Statements: Some pastries are toffees. All toffees are chocolates. Conclusions: 1.Some chocolates are toffees. 2.Some toffees are not pastries.

Since one premise is particular, the conclusion must be particular and should not contain the middle term. Thus, it follows that 'Some pastries are chocolates', I is the converse of the second premise and so it holds. Since both the premises are affirmative, the conclusion cannot be negative. Thus, II does not follow.