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.
.We would like to go and thank him ourselves, but we _____ out his address yet.
Was it because it snowed last night ____ he didn’t come?
.The purpose of the research had a more important meaning for them than ______.
Believe it or not, he came _______.
Work starts every day at 7 a.m. and goes on until late afternoon _____ a break at midday .