Please choose the correct ending to complete the given sentence: Health: [header] How to stop wheezing [title] Keep your living environment clean. [step] Removing irritants from the air you breathe can stop wheezing and associated difficulties caused by external sources, so you should keep the air in both your living and working environment as clean as possible. [substeps] Dust, sweep, and vacuum your home and office regularly.

Ending1: Vacuuming and dusting will prevent food, feathers, and other flying dust dust from getting into your home. For activated charcoal, cleaning will really keep it from accumulating a mound of dust and making the air more susceptible to pollution. Ending2: Clean all air vents and air heaters frequently and heavily. Your house should also stay at a designated temperature of 65 and 80 degrees fahrenheit to help with respiratory functioning and reduce the risk of wheezing. Ending3: If you have pets, you may need to vacuum every other day to adequately control pet dander and fur. Clean or change the filters in your heating and cooling system. Ending4: Wash kitchen floor in hot water to reduce irritating and unsanitary smells. Wash any surfaces so dirt and germs are removed.

Answer format: ending1/ending2/ending3/ending4