He _________ desperately in vain for something to say to break the silence.
| A．thought about | B．cast about | C．talked about | D．set about |
I have an appointmentDr. Smith, but I need to change it.
| A．to | B．off | C．with | D．from |
--- Do you think Mom and Dadlate?
--- No, Swiss Air is usually on time.
| A．were | B．will be | C．would be | D．have been |
the course very difficult, she decided to move to a lower level.
| A．Find | B．Finding | C．To find | D．Found |
Shakespeare's play Hamletinto at least ten different films over the past years.
| A． | had been made | B． | was made |
| C． | has been made | D． | would be made |
Don't turn off the computer before closing all programsyou could have problems
| A． | or | B． | and | C． | but | D． | so |