--- I always look out when crossing the street.

--- You're right. You cannot be too __________ .

A. nervous          B. careful           C. hurried          D. careless

—I always look out when crossing the street.

—You're right. You cannot be too __________.

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一I always look out when crossing the street．

一You’re right. You cannot be too            ．

      A．nervous               B．careful                 C．hurried                   D．careless

－I always look out when crossing the street.

－You're right. You cannot be too ________.

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