(2013·高考北京卷)I have an appointment________DrSmith，but I need to change it

The light is out in her room. She ___ to bed.

Professor Jordon is well known for his_____ into the habits of the common housefly.

Will a cell _______ —I’m afraid not. Only a computer can be used to runthis software.

John is fond _____ football, while his brother is crazy _____ music[ ]