— Where's your father?
— He ______ Beijing. He _____there last month.
A:has gone to; went
B:has been to; went
C:has gone to; has gone
D:has been to; has gone
-- are you?
-- I'm fifteen.
***在2016年《政府工作报告》中指出, “要依法严厉打击侵犯知识产权和制假售假行为,加强对知识产权的保护”。这是因为( )