Only when he returned _________ that the war had ended and the army had come back.
Scientists observe ___ making the most of our senses when we are young can keep us healthy later on in life.
A lot of scientists believe that women’s sense of smell is better developed than ____ of men.
I heard it was going to become cloudy this afternoon, ____ by a storm.
I’m sure Wang Lin is ____ to come to my aid this afternoon.
Then she wanted to run, but fear ____ her still.