问题
                    
Mum, why don’t you have the robot ________ housework for you?— Oh, it caught a virus, I should have it _________ at once.
                            A:done; repair
B:do; repaired
C:done; repaired
D:do; repair
                        
                        B:do; repaired
C:done; repaired
D:do; repair
正确答案是: