Before Sally left home, her mother kept telling her to ________ her manners at the party.

     A．notice                B．care                 C．mind                 D．observe

 ________, you need to give all you have and try your best．  

     A．Being a winner                                B．To be a winner       

       C．Be a winner                                       D．Having been a winner

 You can never be ________ when crossing the street．

     A．very careful                                     B．too careful     

       C．carefully enough                                D．enough careful

 It is usually warm in my hometown in March, but it ________ be rather cold sometimes.

     A．must            B．can              C．should              D．would  

 More wild tigers have been seen in the forest around this area, ________ there used to be very few.

     A．when           B．where           C．what              D．which  

 It is ten years since we ________ each other last time． 

     A．see             B．have seen        C．saw           D．had seen  

 Not until she took off her dark glasses ________ she was a famous film star.

     A．I realised         B．that did I realise   C．did I realise     D．that I realised  

 It was the training ________ he had as a young man ________ made him so excellent.

     A．what; that      B．that; which      C．that; what        D．which; that  

 _________ he was, he still went on with his work.

   A．Tired although     B．Tiring as       C．Tired though     D．While tired  

 Raising environmental awareness was the aim of our art exhibition ____ last week.

     A．to hold              B．held                   C．having held        D．being held