Not until the heavy snow blocked the express ____ how serious the weather was. 
#80740
A
the villagers did realize
B
the villagers realized
C
did the villagers realize
D
didn’t the villagers realize
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Not until he retired from teaching three years ago       having a holiday abroad.
#82402
A
he had considered
B
had he considered
C
he considered
D
did he consider
  – Sir, we have failed to work out this problem. What is exactly the right way?--- Look. Only in this way ________ , but you boys _____ a wrong way.
#83269
A
you can work it out; take
B
you can work out it; take
C
can you work it out; take
D
can you work it out; took
He dressed up and went to the party as if_____.   
#81771
A
was invited
B
had been invited
C
to be invited
D
invited