What caused the fire— ______.

The scientist _____ Canada and he will give us a talk when he _____ back

The Nobel Prize in Literature 2012 was awarded to MoYan, ______ famous Chinese writer. And he is ______ first Chinese to win theprize.

Do you have a baseball— __________. But Lily has one.

didn’t you try to finish thecomposition— I tried to , butI could, the bell rang announcing the end of the examination time