So diffcult____it to fit in at school that she decided to drop out.
#82136
A
found she
B
did she find
C
she found
D
she did found
推荐题目
Not until he left his home _____ to know how important the family was for him. 
#80776
A
did he begin
B
had he begun
C
that he began
D
he had begun
 “ On no account” , the teacher said, “________ open in day and night. ”
#79982
A
the door to the basement is to be left
B
the door to the basement was to be left
C
is the door to the basement to be left
D
was the door to the basement to be left
Not until the train pulled into the station          that his suitcase was gone.
#80626
A
did he find
B
had he found
C
he had found
D
he found