— It is around 100 years, known to us all, ______ the first modern Olympic Games was held.— It really is. But were _____ ?
It was ______ back home after the experiment.
Please tell me how the accident_____. I am still in the dark.
I hate ____ when people talk with their mouths full.
________in the computer games,the boy no longer put his heart into study.
Dr. Bake is a professor of physics. ________,he is a famous writer.