_____ is necessary for us to tell him about the result.
#81516
A
That
B
This
C
It
D
What
推荐题目
Only by shouting at the top of his voice _________________.
#82268
A
he was able to make himself hear
B
he was able to make himself heard
C
was he able to make himself hear
D
was he able to make himself heard
He failed in the exams and only then _____ how much time he had wasted. 
#81700
A
he realized
B
did he realize
C
he had realized
D
had he realized
Not until his mother came back_______.
#81003
A
he began to do his homework
B
had he began to do his homework
C
he had begun to do his homework
D
did he begin to do his homework