问题
                    
He ______ prison two years ago and now he _______.
                            A:was put in; was set free
B:was shut into, is set free
C:put into, has been set freely
D:was put into; has been set free
                        
                        B:was shut into, is set free
C:put into, has been set freely
D:was put into; has been set free
正确答案是: