19. Johnson ______ for 5 years for political reasons when he was young.
| A．was put in prison | B．was in the prison | C．out in prison | D．was in prison |
Calculations, which are astronomically exact, have been madewith the use of computers.
| A．possible | B．it possible | C．possibly | D．to be possible |
The man deniedany thing at the supermarket when he was questioned by the police.
| A．to have stolen | B．having been stealing | C．having stolen | D．to steal |
“Do you thinkI should attend the lecture?” she asked me.
| A．that | B．whether | C．if | D．when |
Some womena good salary in a job instead of staying home, but they decided not to work for the sake of the family.
| A．could have made | B．should have made | C．would make | D．must make |
We agreed to acceptthey thought was the best tourist guide.
| A．whatever | B．whomever | C．whichever | D．whoever |