--- Who ______ it be that is singing in the next room?
--- It _______ be Lucy, but I am not sure.
| A．can ; may | B．may ; can | C．can; must | D．must; may |
Don’t reply to any e-mails _____ personal information, no matter who sends it to you.
| A．requesting | B．searching |
| C．asking | D．ruining |
The old couple decided to _____ in the mountain village since it was so quiet and the air there was fresh as well.
| A．set down | B．put down |
| C．settle down | D．calm down |
According to a recent research, the number of people who take the adult college entrance examination is _____ reducing.
| A．frequently | B．entirely |
| C．extremely | D．Gradually |
Some patients would rather pay more for more _____ and comfortable treatment in hospital.
| A．active | B．fond | C．reliable | D．giant |
People in the earthquake-stricken area were grateful for the _____ contribution which was offered by the people from all over the country.
| A．concerned | B．generous |
| C．equal | D．hopeful |