Please excuse me _______ your letter by mistake.
Because of my poor memory, all_______ you told me has been forgotten.
The woman _______ is talking to my mother is a friend of hers.
The man _______ visited our school yesterday is from London.
Children who are not active or diet is high in fat will gain weight quickly. (2010 .湖北)
That's the new machine parts are too small to be seen (2010.山东)