Only after Mary read her composition the second time ________ the spelling mistake.(2012·天津)
#79832
A
did she notice
B
she noticed
C
does she notice
D
she has noticed
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Not only ____ work faster, but also he worked better.
#81122
A
he did
B
does he
C
he does
D
did he
________ there, the southwest desert contains a remarkable variety of plants.
#82952
A
Rarely as it rains
B
Sometimes it rains
C
It rarely rains
D
Although rarely rains
Only after the woman had her own child ______how difficult it was to be a mother. 
#81791
A
she realized
B
had she realized
C
she had realized
D
did she realize