itish science fiction writer, Isaac Azimac,believes that robots are_____ ever to do harm to a human being.

34、It must have rained last night, ___________?

─Kate， apple on the table is for you. Eat it before you go to school.─Thanks，Mum. apple a day keeps the doctor away.

His parents are going to __ a computer ___him.

下列各句中，没有语病的一句是            （      ）