A fire broke out in the neighborhood last night. By the time the firemen arrived, it .
| A．had been put out | B．would put out |
| C．has been put out | D．was putting out |
The thief ran away at the _____ of a policeman.
| A．sight | B．screen | C．sound | D．seeing |
There are usually at least two _____ of looking.
| A．means | B．ways | C．directions | D．courses |
My sister cleans the house from _____ to bottom when she is expecting visitors.
| A．roof | B．ground | C．floor | D．top |
Facing danger, he always _____ calm.
| A．seems | B．remains | C．becomes | D．appears |
When my sister phoned me, I could not hear clearly what she was _____.
| A．speaking | B．talking | C．saying | D．telling |