If you _________ smoke, please go outside.
There were some chairs left over____ everyone had sat down.
The old man has a son and two daughters, ______treating him well, ____makes him sad.
—Will you tell the secret to the teacher? —No!_________asked to.
Women______-drink more than two cups of coffee a day have a greater chance of having heart disease than those _______- don’t.
Today, we’ll discuss a number of case_______-beginners of English fail to use the language properly.