Only when Michael had his own child ____ making a kid grow up healthily was too hard. 
#81454
A
he realized
B
had he realized
C
did he realize
D
he had realized
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 The dying old man opened his mouth as if_______something. 
#84608
A
to say
B
saying
C
to have said
D
was saying
(2013·四川省南充市二模) ________ him not to do so, he wouldn't have made such a serious mistake.
#79811
A
If I persuaded
B
Did I persuade
C
Had I persuaded
D
If I should persuade
Not until____ did Humphrey begin working. 
#80292
A
did it stop raining
B
had it stopped raining
C
it stopped raining
D
it stops raining