Maybe if I ________ science，and not literature then，I would be able to give you more help.(2011·北京)
| A．studied | B．would study |
| C．had studied | D．was studying |
Sally's never seen a play in the Shanghai Grand Theatre,?
| A． | hasn't she | B． | has she | C． | isn't she | D． | is she |
A small plane crashed into a hillside five miles east of the city, _____all four people on board. 
| A．killed | B．killing | C．kills | D．to kill |
You can’t borrow books from the school library ______ you get your student card.
| A．before | B．if | C．while | D．as |
With the government’s aid, those _____ by the earthquake have moved to the new settlements.
| A．affect | B．affecting | C．affected | D．were affected |
Mozart's birthplace and the househe composed 'The Magic Flute' are both museums now
| A． | where | B． | when | C． | there | D． | which |