He’s ______ as a “bellyacher”—he’s always complaining about something.
| A．who is known | B．whom is known |
| C．what is known | D．which is known |
The worker agreed to _____ the strike if the company would satisfy their demands.
| A．call for | B．call forth | C．call off | D．call up |
The managing director took the _____ for the accident, although it was not really his fault.
| A．guilt | B．charge | C．blame | D．accusatio |
The new secretary has written a remarkably _____ report only in a few pages but with all the details.
| A．concise | B．clear | C．precise | D．elaborate |
. More than one-third of the Chinese in the United States live in California, _____ in San Francisco.
A. previouslyB. predominantly C practicallyD. permanently
No one has _____ been able to trace the author of the poem.
| A．still | B．yet | C．already | D．just |