Scientists observe ___ making the most of our senses when we are young can keep us healthy later on in life.
People try to save time by using their own cars, and this ________ creates further problems.
I was about to leave_______ something happened, which attracted my attention.
Our city has experienced _______ this year as it did last year.
--- There is ________dark stain(污渍) on my coat. Who left it? ---- It’s me, Dad. I did it just for ______ fun.
The nurses are trying their best to reduce the patient's fear ____ he would die of the disease.