1、 John and I ————friends until he called me a coward.

1、 John and I ————friends until he called me a coward.
A,use to be B,were used to be
c,used to be D,used to being
2、 It's a long time ————————————.
A,when i saw you last B,then I saw you last
C,for I saw you last D,since I saw you last
3、 Either Marry or I ————to blame.
A,to be B,am C,are D,is