... maximum of two four – years terms. 6. Thousand of antibiotics have been developed, but only about thirty are in common use today. Đề luyện thi Tốt nghiệp và Đại học Năm 20 11 – Đề 11 Exercise 1. ... pictures, I ( 12 –work )_______ here for 12 years and I can’t believe that this ( 13 – happen )_______. How did they manage ( 14 –take )______ them so easy? They might try ( 15 – sell )________ ... the firm is so ( 1 – SUFFICIENT ) _________ 2. They ( 2 – SPELL )_________ my name on this form.The first letter is L, not R. 3. Thank you for your postcard, it’s very ( 3 – THINK )__________...