When_________why he was late, he made no answer.
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.
No matter how I tried to read it,the sentence didn’t ________to me.