问题
                    
_______ the teachers in the school is one hundred, and ________ of them are women teachers.
                            A:A number of; four-fifth
B:The number of; four-fifth
C:A number of; four-fifths
D:The number of; four-fifths
                        
                        B:The number of; four-fifth
C:A number of; four-fifths
D:The number of; four-fifths
正确答案是: