you may have , you should gather your courage to face the challenge .

They put forward a lot of plans at the meeting, none of _________ carried out in their work.

The old lady’s hand shook frequently. She explained to her doctor ________ this shaking had begun half a year before, and ________, only because of this, she had been forced to give up her job. 

 Up to Tuesday's attack, the worst school shooting in the U. S. was in March 1998 in Jonesboro,______two boys, aged 11 and 13, shot and killed a teacher and four girls.

         ，I have to put it away and focus my attention on study this week.