I failed in the examination last term and only then ____ the importance of studies. 
#84593
A
I realized
B
I had realized
C
had I realized
D
did I realize
推荐题目
He suggested that the work _____ at once. 
#84527
A
be done
B
should do
C
could do
D
does
 ____ in the United States, St Louis has now become the 4th largest city. 
#80941
A
It is the 24th biggest city
B
It was the 24th biggest city
C
Before the 24th biggest city
D
Once the 24th biggest city
The child tiptoed quietly to the bird.___into the forest when he was about to catch it. 
#83927
A
Flew it away
B
Away flew it
C
Away it flew
D
Flew away it