题目内容：
回答题One in five US workers regularly attends after-work drinks withco-workers, where the most common 47 rangefrom bad-mouthing(说……的坏话)another worker to kissing a colleagueand drinking too much,according to a study48 on Tuesday.
Most workers attend so-called happy hours to 49 with colleagues, although 15 percent go tohear the latest office gossip and 13 percent go because they feel obligated,said the survey conducted for CareerBuilder. com,an online job site.
As to what happens when the after-work drinks flow, 16 percentreported bad-mouthing a colleague, 10 percent shared a secret about acolleague, 8 percent kissed a colleague and 8 percent said they drank too muchand acted 50 .5 percent said they had shared a secret aboutthe company, and 4 percent 51 to singing karaoke.
While 21 percent of those who attend say happy hours are good for 52 ,85 percent said attending had not helped themget 53 to someone higher up orget a better position.
An equal number of men and women said they attend happy hours withco-workers, with younger workers aged 25 to 34 most likely and workers over 55least 54 to attend.
Overall, 21 percent of workers attend happy hours with co-workersand, of those, 55 a quarter go at least once a month.
The survey was 56 online by Harris Interactive on behalf ofCareerBuilder. com among 6,987 full-time employees.
A．bond
B．acknowledged
C．nearly
D．specially
E．anywhere
F．mishaps
G．obligated
H．likely
I．conducted
J．idly
K．unprofessionally
L．networking
M．released
N．confessed
O．researched
47__________
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