问题
                    
―Is Tom coming to the concert this evening―No, he _________ be at the concert. He _______ abroad.
                            A:was listening; is watching
B:listened; were watching
C:was listening; watched
D:was listening; were watching;
                        
                        B:listened; were watching
C:was listening; watched
D:was listening; were watching;
正确答案是:
                         
                        
                        
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