Only when they were put in prison and lost freedom(自由) _________ its importance.
#81127
A
they realized
B
did they realize
C
realized they
D
had they realized
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Only when they came ___________.
#81587
A
I left the office
B
did I leave the office
C
left I the office
D
I did leave the office
—Why didn’t you say hello to him yesterday?—What a shame!But never before_______I_______him.
#84163
A
/;had met
B
have;met
C
did;meet
D
had;met
Mary said that once ________ him you would like him and make friends with him.
#81388
A
meet
B
to meet
C
meeting
D
met
The bus hit against a tree in the fog and __________ to the deep valley, with then passengers killed and twenty wounded.
#81372
A
down did it roll
B
down rolled it
C
it down rolled
D
down it rolled
More than seven in ten get angry ________ to wait longer than one minute for a web page to be downloaded.
#82976
A
if forced
B
unless forced
C
once forcing
D
until forcing