1-5 DBDAC6-10 ADCAB 11-15 ACADB 16-17 BB18-20 CDC21-25 CBACB 26-30 CBADA 31-35 CDDBA36-39 BCDB40-43 DAAD44-46 BAC47 C 48-50 ABB51 Could/ May I speak to Professor Johnson 52.May I help you 53.Whats the matter/ trouble/ problem 54.is it serious 55. tell Professor Johnson
