6- (14) Taro and Tomoko ( O knew ) each other since they were children. 3 know 2 have known の had known (15) Ifyou come at this time tomorrow, we ( ) our dinner. O would have finished 2 have already finished 3 will have already finished ④ will be already finished (16) It( のis )a long time since I met you. (2) was 3 will be の has (17) She( O had been studying ) English for two hours when she heard the doorbell. 2 has been studying has studied had been studied (18) A:He is going back to England tomorrow morning. ) to leave Japan. B:Ididn't know that he ( の has decided 2 would have decided ③ will decide had decided