—Tom, you are smoking again?—______? It’s none of your business.
My sister was against my suggestion while my brother was __________ it.
Working hard is not only a __________ of great success, but it is among the essential requirements.
The new product was __________ in 2011 and will be put into use in 2012.
Listen! Do you hear someone __________ for help?
Your house is always so neat—how do you __________ it with three children?