Only after Mary read her composition the second time _________ the spelling mistake.
#81405
A
she noticed
B
she has noticed
C
did she notice
D
does she notice
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Never before ______ such a wonderful place ______ Qingdao. 
#82359
A
have I been to; as
B
I have been to; like
C
have I been to; like
D
I have been to; as
 It was really noisy in the workshop. Not until ______ at the top of my voice ______ to look at me.
#80327
A
did I shout; he turned
B
had I shouted; had he turned
C
did I shout; did he turn
D
had I shouted; he turns
Only when the war was over _______ return to his hometowns.
#80567
A
have the soldiers
B
the soldiers
C
the soldiers did
D
did the soldiers