Not until Mr. Smith came to China ___ what kind of a country she is.
#80528
A
did he know
B
he knew
C
he didn't know
D
he could know
推荐题目
They don't study in NO 1 middle school, ___ those boys.
#83724
A
so do
B
so don't
C
neither study
D
nor do
Only when I left my parents for Italy, ________how much I loved them.
#82588
A
I realized
B
I had realized
C
had I realized
D
did I realize
I finally got the job I dreamed about. Never in all my life ________ so happy! 
#84295
A
did I feel
B
I felt
C
I had felt
D
had I felt