The prompt for this week was it ‘it was heavy that I expected’

Here is mine

It was lunch and I was sitting down on the bench eating my sandwich. Suddenly, the school gates opened and a truck came in. The driver came out and dropped a box and drove away.  I ask what was inside the box and she said it was a surprise. I wanted to see what was, so when the principal left, I wrapped my hands around the box and lifted it up. It was only in the air for seconds when thud, it dropped, it was heavier that I expected it to be, so I left it. We saw what it was during Assembly, it was a box of plants.