Sorry, dear. It’s my _____to have you take tablets by ____.
—Dad, I feel just relieved after the dreaded national college entrance exam. —__________.
—Let's have a game of tennis; the loser has to treat the other to a hot dog.— .
His uncle went abroad in 2010, and _______since.
Only by seizing every possible_____ to practice can you possibly hope to improve your spoken English.
—Why do many people keep dogs as pets?—Because they are our ____ friends and they never desert their masters.