The street ______ the traffic accident last night,
| A．sensed |
| B．saw |
| C．knew |
| D．had seen |
It is clear that the whole world is passing through a social revolution in which a central _____ must be taken by scientists and technologists.
| A．process | B．attention | C．measure | D．part |
The author of the report is well _____ with the problems in the hospital because he has been working there for many years.
| A．acquainted | B．informed | C．enlightened | D．advised |
With the change of the economic foundation the entire immense superstructure is _____ rapidly transformed.
| A．anything but | B．more or less | C．at large | D．any more |
Her skirt had been so _____ in packing that she had to iron it before going out.
| A．faded | B．torn | C．dirty | D．crushed |
Some people either _____ avoid questions of right and wrong or remain neutral about them.
| A．violently | B．sincerely | C．properly | D．deliberately |