11.  On a recent sweltering day, my family packed a picnic basket, slathered ourselves with sunblock and took the D train to the Brighton Beach stop.

12.  She had been waiting for the D train at the Parkside Avenue station when the man walked up behind her and threatened to kill her.

13.  That means that on long lines, like the D train, the operator usually makes two round trips in a shift.

14.  We had just squeezed onto a crowded D train when I glanced down and saw that my shoelace was untied.

15.  When was the last time you overheard someone discussing Division I-AA on the D train?

16.  The D train to the Bronx was packed four hours before the first pitch, and thousands of people were waiting outside the ballpark to get inside.

17.  The D train to the Bronx was packed four hours before the first pitch, and thousands of people were waiting to enter the ballpark.