一．单项填空(每小题1分，共15分) 
    1．-You must obey every word of mine!
       -            I don’t? 
     A．What if      B．How if    C．Such as   D．Only if
    2．           turn out that he was not the kind of person we wanted．
     A．He      B．That    C．This    D．It
    3．My sister has recently got engaged         a foreign teacher，who has been engaged
               education research for years．