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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—Serina has been watching the TV series the whole night.— ________.
#79567
A
So her parents have
B
So have been her parents
C
Her parents have been so
D
So have her parents
 They waited and waited. _____ they had been looking forward to.
#84014
A
Then the hour came
B
The hour then came
C
Then came the hour
D
Then did the hour come