22、In 1519 ____ traveler who went to American from Europe discovered ____tomato．

A．the; the          B．the ; a          C．a:．a         D．a; the

21、After working abroad for several years．Gill wants to settle down to a ____job in Britain．

A．normal         B．constant         C．permanent         D．primary

20、Kids should be encouraged to get involved in activities ___ they meet other kids．

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

19、One of the first things Joan did ____ getting home was to water her flowers．

A．by          B．on             C．at           D．for

18、I cannot see any tea in this cupboard．_____?

A．Has it all been finished                         B．Was it all finished

C．Has it all finished                         D．Did it all finish

17、Had the bomb dropped over a populated area of the city , there ____ a great deal of damage．

A．may be                                               B．might have been   

C．may not be                                             D．mightn't have been

16、______, he talks a lot about his favorite stars after class．

A．Being a quiet student                            B．Quiet student as he may be

C．Quiet as he may be a student                     D．As he may be a quiet student

15、I was so tired that __ I closed my eyes, 1 fell asleep．

A．the moment                                            B．the moment, when  

C．for the moment                                          D．at the moment when

14、Everyone's talking about _____ a movie, but nobody can tell exactly what its title is．

A．there being                                           B．there be

C．there will be                                            D．there is