单项选择题

Market research is usually very ______, involving thousands of people answering hundreds of questions.

A．detailed
B．details
C．detail
D．detailing
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单项选择题
I was too ______ to say hello to my drunken father in the street.
A．embarrassed
B．embarrass
C．embarrassing
D．embarrassment
单项选择题
Her husband died in a traffic accident. ______ five kids with her.
A．left
B．leaving
C．leave
D．being left
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