Choose the option in which the prepositions complete the sentences with accuracy, respectively:
I - Stress can make us quite forgetful ________ times.
II - The New York Port Authority operates daily _________ a lot of pressure.
III - After a storm, the fishing boat was lost __________ sea.
IV - The remains of the wreckage were found _________the shore.
V - They were ___________ call when the emergency alarm went off. They were able to act promptly though.