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
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I failed in the last exam and only then __________ the importance of studies.
#82995
A
I realized
B
I had realized
C
had I realized
D
did I realize
 Generally speaking, ________according to the directions, the medicine has no side effect.
#81943
A
when taken
B
when taking
C
when to take
D
when to be taken
Only at that time            how much time she had wasted.
#81919
A
Mary did know
B
did Mary know
C
does Mary know
D
Mary does know
We read them ________; we remember them________. 
#84206
A
as young; as old
B
as younger; as older
C
when young; when old
D
when younger; when older