问题
                    
__ he still paused uncertain, hebecame aware that the driver was looking closely in from the street at thisunusual scene
                            A:What; that
B:When; who
C:Who; that
D:That; who
                        
                        B:When; who
C:Who; that
D:That; who
正确答案是:
                        
                        
                        
                    同类题型
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