What is the timeslot for 'gary has to choose' with an 18-49 of 1.8/5?
CREATE TABLE "season_2_2009_2010_weekly_ratings" (
  "episode" text,
  "air_date" text,
  "timeslot" text,
  "18_49" text,
  "viewers" real
);
SELECT "timeslot" FROM "season_2_2009_2010_weekly_ratings" WHERE "18_49"='1.8/5' AND "episode"='gary has to choose';