—Mum, my little sister is crying all the time.

       —Mary, be                           ! She feels sick. You should take good care of her.

A. patient                B. lazy                                C. polite                            D. fair

-----Mum,my little sister is crying all the time.

  ------Mary,be _________!She feels sick.You should take good care of her.

A.patient    B.lazy    C.polite    D.fair

— Mum, my friends are waiting for me outside. May I go out to play with them?
— Yes, you        , but be careful, please.

Mum, __________ my teacher Miss Li.  

A. she is            B. that is           C. he is            D. this is

Mum,          my teacher, Mr Wang.

A. he is             B. it is         C. that is        D. this is