question: be gracious to me in the last moment.
Capitalize this past sentence correctly.
A: Be gracious to me in the last moment.

question: a researcher says that nanotechnology opens unimagined possibilities for mankind.
Capitalize this past sentence correctly.
A: A researcher says that nanotechnology opens unimagined possibilities for mankind.

question: the financial information about the canal is not complete, but there is enough to discern that it was a financial bonanza.
Capitalize this past sentence correctly.
A: The financial information about the canal is not complete, but there is enough to discern that it was a financial bonanza.