问题
                    
The country has already sent up an unmanned spacecraft to the moon.—Yes. Chang’e I to the moon last October.
                            A:has been sent
B:has sent
C:was sent
D:sent
                        
                        B:has sent
C:was sent
D:sent
正确答案是:
                        
                        
                        
                    同类题型
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