I failed in the final examination last term and only then_____ the importance of studies.
#81338
A
I realized
B
I had realized
C
had I realized
D
did I realize
推荐题目
  Not until he got to the factory _______that he had lost his papers.
#83272
A
he found
B
did he find
C
had he found
D
has he found
 — Did you know any French before you arrived in Washington?— Never ____ it, actually. 
#81886
A
had I learned
B
have I learned
C
I learned
D
would I learn
China is a peace-loving country and _____no circumstances _____ first use nuclear weapons.
#82397
A
on; will China
B
on; China will
C
under; will China
D
under; China will