问题
                    
Do you know if he________ to play football with us? —I think he will come if he _________ free tomorrow.
                            A:comes; is
B:comes; will be
C:will come; is
D:will come; will be
                        
                        B:comes; will be
C:will come; is
D:will come; will be
正确答案是:
                        
                        
                        
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