문 I am acutely aware of the burdens drug enforcement　 _________________. ① places upon us　　　　　 ② place upon ③ we are placed with　　　 ④ placing upon ⑤ that we place 문2 The failure of Exxon Oil Company in the 1980s ___________ in large part to high salaries paid to executives. ① was due with　　　　　　② was due ③ was　　　　　　　　　　 ④ had been ⑤ has been 문3 Choose the underlined part which is not grammatically correct. The data, ① (which) have been submitted ② (for) publication in ③ (the) Astrophysical Journal, also ④ (confirms) that the universe is not ⑤ (what) it seems to human senses. 부탁해요