Are these sentences correct?....What I like most about the building

What I like most about the building is the large windows.
What I remember best is the pet ……….
What I will never forget was the present that received from my mother.
What embarrassed me most was the incident .
What I will never forget was the Christmas holiday.
What I remember well was the school trip


What I will never forget was the present that I received from my mother.

Everything else is OK.