Choose the option in which the prepositions complete the sentences with accuracy, respectively:

1. I) Stress can make us quite forgetful ______ times.
   

2. II) The New York Port Authority operates daily ______ a lot of pressure.
   

3. III) After a storm, the fishing boat was lost _______ sea.
   

4. IV) The remains of the wreckage were found ______ the shore.
   

5. V) They were _____ call when the emergency alarm went off. They were able to act promptly though.