问题
                    
Jack usually ___ his room after school. But now he ___ guitar.
                            A:cleans; plays
B:is cleaning; plays
C:cleans; is playing the
D:cleans; is playing;
                        
                        B:is cleaning; plays
C:cleans; is playing the
D:cleans; is playing;
正确答案是:
                         
                        
                        
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