49．A．for a week      B．in a week      C．at a week        D．a week

48．A．swim           B．swims           C．swimming       D．are swimming

47．A．down          B．in                 C．near             D．over

46．A．No            B．not               C．don’t            D．doesn’t

45．A．make          B．carry          C．play             D．do

44．A．listen          B．speak          C．say             D．do

43．A．many          B．much          C．a lot                   D．very much

42．A．workers                B．farmers         C．drivers                 D．students

41．A．for               B．at                  C．of                 D．in

40．How many     can you see?

    A．food             B．cup of tea           C．bottles 0f oranges D．basket of banana

Dear mother，

  I’m fine  41   China．I have classes with Chinese   42   ．Now I have   43     Chinese friends．They teach me Chinese．and I teach them English．I can  44   little Chinese now．After class we sing and   45  games．

   My school is  46   big，but it is very nice．It is  47  a river．Sometimes we go to  48  in the river．We go to school five days  49 ．On Sunday I go swimming  50  my Chinese friends．I have a good time here．Don’t worry about me．Mom．

                                                               Love，

                                                                 Mary