问题
                    
He went into his room, the light and began to work.
                            A:has turned on
B:turned off
C:又根据began to work可知是把灯打开。故选C
D:has turned off;
                        
                        B:turned off
C:又根据began to work可知是把灯打开。故选C
D:has turned off;
正确答案是:
                        