问题
选择题
-- I always look out when crossing the street.
--- You're right. You cannot be too __________ .
A．nervous
B．careful
C．hurried
D．careless
答案
答案：B
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-- I always look out when crossing the street.
--- You're right. You cannot be too __________ .
A．nervous
B．careful
C．hurried
D．careless
答案：B