The runners________ several times ________their positions on the starting line, otherwise they will be kicked out.
| A．are warned, making up | B．warn, to make up |
| C．have been warned, to take up | D．warn, to have taken up |
Nowadays，more film stars ______ to be difficult to work with．
| A．say | B．have said |
| C．are said | D．were said |
I______ him the money but he didn’t tell me he needed it．
| A．should have lent | B．must have lent |
| C．need have lent | D．could have lent |
Volunteering gives you a chance _______ lives，including your own．
| A．change | B．changing |
| C．changed | D．to change |
The news came as no surprise to me．I _____ for some time that the factory was going to shut down．
| A．knew | B．had known |
| C．have known | D．know |
Dan Brown，_____ author of The Da Vinci Code，is _____ very famous American writer．
| A．a; the | B．the; the |
| C．the; a | D．a; a |