When Miss Smith asked me a few questions in class yesterday, my mind happened to be wandering. As a result, I had to give her awful ____________ responses. 
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A
offbeat
B
off-line
C
offhand
D
off-key
推荐题目
When the boss came in, these workers pretended to________ carefully.
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A
working
B
be working
C
work
D
have been working
It is not a serious illness. I guess she will ______ soon.
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A
remove
B
recover
C
replace
D
reduce
She ________ on her work so much that she didn’t notice that a crowd of people had _______around her. 
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A
focused; focused
B
fixed; gathered
C
concentrated; concentrated
D
carried; collected