_____ the doctors really doubt is _____ my mother will recover from the serious disease soon.

The reason ____he was late was ____he had taken a wrong bus.

____ is well known to the Irish is ____ St. Patrick was taken to Ireland as a prisoner when he was 16.

He is going to build a team that has a lot of potential and he thinks that is    excites him.

The reason__________ their failure you know is__________ they didn't get fully prepared for the experiment．

—He is eager to try something he has never tried before.
—Oh I see. That’s ______he’s different from others.

The reason________he was late was ________he missed the train.                  

----Are you firmly against any independence move(獨立運動) by Taiwan?
-----Of course. That’s           our basic interest lies.

Part of the reason Charles Dickens loved his own novel, David Copperfield, was ________ it was rather closely modeled on his own life.

  ------Where did you first meet your boyfriend?
------It was in the department store ______ he worked.