If I ____ more about diamond, I ____ cheated by that man.
#102987
A
had known, would not be
B
had known; wouldn’t have been
C
knew; would not have been
D
had known; would never be
推荐题目
Yangzhou high school ___________ since 1902. 
#100008
A
has come into existence
B
has been existed
C
has been in existence
D
began to exist
A local radio station said that several eruptions _____ in the past twenty years.
#101916
A
had been taken place
B
took place
C
have taken place
D
had taken place
We________on this project for four hours.Let's have a rest.
#99184
A
are working
B
have been working
C
worked
D
had worked