Only then ___ that he had made a mistake.
#83769
A
he realized
B
did he realized
C
realized he did
D
did he realize
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Only after his friend came _______. 
#81301
A
did the computer repaired
B
was repaired the computer
C
was the computer repaired
D
the computer was repaired
________ for the fact that she broke her leg, she might have passed the exam.
#79808
A
Hadn't it been
B
Had it not been
C
Was it not
D
Were it not
Not until the woman was out of work again two months ago ____ going to attend a training class.
#81030
A
had she considered
B
did she consider
C
she considered
D
she had considered