" We are bound to forget them". It isn't correct? How they are bound to forget themselves? Please clear my doubt friends and experts.

They have many remember.                      (b)
On any given day are                                (c)
bound forget them.                                    (d)
This creates difficulties the people.           (e)

Solution:
(a) annoyed with passwords
(b) many to remember
(c) day, they are
(e) difficulties for the people