12. Looking east on the busy street in front of the Taipei main station, __
(A) the two suspects were seen going to the street.
(B) the two suspects have been seen going to the street.
(C) Paul seeing the two suspects going into the mall.
(D) Paul saw the two suspects going into the mall.
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統計: A(0), B(1), C(0), D(1), E(0) #3351913
統計: A(0), B(1), C(0), D(1), E(0) #3351913