Compléter Mixed verb tenses MIR B1.2 p.3 PART 2/2Version en ligne Review of verb tenses par Laura Ethel Perez Ramirez 1 do working have must started was working not like invested start am pass not did was Part 2 / 2 I ( 13 ) ( not / start ) college until I ( 14 ) ( be ) twenty - one years old , so it is a bit different for me than for most undergrad students . I ( 15 ) ( work ) full - time when I ( 16 ) ( start ) college , and I ( 17 ) still ( work ) part - time to pay the fees . Jenny Scott , Canada I ( 18 ) ( not / like ) my degree program very much , but , with just one year to go , I really ( 19 ) ( modal / pass ) all the courses and graduate . I ( 20 ) ( invest ) too much time , money and effort in university to fail to graduate now ! Kedar Sharma , Indi a