I can’t remember ______ I met the man.
—I need some fresh air, so I am going out for a walk.—________.
—Don't you know that a proper amount of exercise a day will ________ to a person's health?—No wonder so many senior citizens do exercise in the square.
The home ________ the lion is Africa while the koala bear is native ________Australia.
You can't see anything clearly through a telescope unless it ________ correctly to your sight.
The special medicine for the disease was difficult to find though ________ everywhere.