---Are you coming to Betty’s wedding? ---I’m not sure. I ______ go to Beijing on business that day.

--- I’m sorry I ________ make it yesterday. I ________, but I was really busy.--- That’s fine. I know you are usually busy at this time of year.

My parents always _______ great importance to my getting a good education.

You needn’t go to the railway station by taxi because it is within walking ________.It only takes five minutes to walk there.

The middle-aged man said he would accept the job, so we have asked him to ________ his acceptance in writing．