Once she starts a book, she always finishes it, even if it's really __________ .
A. boring
B. amazing
C. bored
D. amazed
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The __________ of new working practices has greatly improved productivity (生产率).
A. qualification
B. entrance
C. introduction
D. variation
Nowadays young people often go to a karaoke bar, where they can __________ whatever song they like to sing.
A. long
B. sting
C. select
D. subject
It appeared to be true, but I had a(n) __________ that she was not telling me the truth.
A. doubt
B. suspicion
C. instinct
D. contrast
In that battle our soldiers __________ through the bushes towards the enemy secretly.
A. exposed
B. crept
C. slapped
D. polluted