Only when I checked the paper once more _________ there was a mistake.
#81527
A
I realized
B
did I realize
C
I had realized
D
had I realized
推荐题目
Only when ______ in 1918, ______ happily back to work.
#83393
A
the war was over … he went
B
was the war over … did he go
C
the war was over … did he go
D
was the war over … he went
Only after Ann read her essay the second time       the spelling mistake.
#80240
A
did she notice
B
she notice
C
does she notice
D
she has noticed
I have been working with Lily for years, and never before        her so serious!
#82705
A
I found
B
I have found
C
did I find
D
have I found