下列各句中，加点的成语使用恰当的一项是 （ ）

（山东省淄博市2009学年度高三二摸，35）Zhang Lin was addicted to computer games during his last year in high school , otherwise he ____________a student of Beijing University .

An artist who was recently traveling on a ferry to the southern island discovered ________ a long lost antique Greek vase

The government should develop system to predict when wildfires occur andgive warnings in time.

I remembered ________ the door before I left the office, but forgot to turn off the lights.[ ]