问题
                    
This is _____ “J” and that’s _____ “F”.
                            A:a; an
B:an; a
C:a; a
D:an;an
                        
                        B:an; a
C:a; a
D:an;an
正确答案是:
                        
                        
                        
                    同类题型
                    There____some bread. Would you like to try it?
It was at the crossroads ________ I met one of my classmates _______ I had not seen for ages.
Did you look up the time of trains to Shanghai?—Yes,the early train is ________ to leave at 5:
Does the child need any help? —-No. He is old enough to _____ himself.