20 years ago, I drove a cab     1    a living. One time I arrived in the middle of the night for a pickup
at a building that was dark    2   a single light in a ground floor window. After a long pause, a small
woman in her 80's stood before me.
     "Would you carry my bag out to the car?" she said. I took her small suitcase to the cab, and then
returned to   3   the woman. She kept thanking me for my kindness. " It's nothing." I told her. "I just try
to treat my passengers the   4   I would want my mother treated."
     "Riverside Street, please. But could you drive through downtown?"
     "It's not the shortest way," I answered quickly.
      "Oh, I don't mind," She said." I'm in no  5  . I am on my way to a hospice." I looked in the back
 view mirror. Her eyes were full of  6  . "I don't have any family   7  ." She continued. "The   8   says I
don't have very long." While we were driving through the city, she showed me the building where she
had once worked. Sometimes she asked me to slow in front of a particular building or corner and
would   9   into the darkness, saying   10  . Not until the first ray of the sun   11   up the sky did we get
to the address she had given me.
     " How much do I   12   you?" she asked.
      " Nothing," I said. Almost without thinking, I bent and gave her a hug. She   13   onto me tightly,
saying " You gave an old woman a little moment of joy." Then she walked into the hospice.
     Behind me, a door shut. It was the sound of the   14   of a life. I don't pick up any more passengers
for the rest of the day. I drove  15  , lost in thought.   16   I had refused to take the run? On a quick 17  ,
I don't think I have done anything more  18   in my life. We are conditioned to think that our lives  19   
on great moments. But great moments often catch us  20  -beautifully hidden in what others may consider
a small one.

     We are going to describe one way to build a rooftop garden that does not even require
soil. Four things are needed for a small rooftop garden. One thing is a roof that can support
the weight. Another is grass cutting. The third thing is a sheet of plastic in which to spread
the cut grass. And the last thing is a box about eight centimeters deep and made out of four
pieces of wood.
     Once you are sure the roof is good, cut and collect some grass. Then lay down the
plastic where the garden box will go. The four-sided box can be as long and as wide as
needed. Place the box on top of the sheet of plastic. Then fill it with the cut grass. Next,
add water and walk on the cuttings to press them down.
     After about three weeks, the rooftop garden is ready for planting. Put the seeds directly
into the wet grass cuttings. This garden is a good place to grow peas, tomatoes, beans, onions
and lettuce. If the box is deep enough, potatoes and carrots will also grow.
     It is important to keep the grass wet until the plants begin to grow. When the plants are
growing, they will need watering every day, unless there is rain. And they will need some liquid
fertilizer. Also, seeds and new plants must be protected from insects and birds. Rooftop
gardens are increasingly popular, and not just to grow vegetables. They keep buildings cooler
in the sun, so they save energy. They can also extend the useful life of a roof.
     Rooftop gardens also reduce the runoff of storm water and help clean the air. Plus the
add beauty, and give birds and insects in the city a nice place to live.