By looking at a problem in as many ways as possible, creative thinkers can find solutions that would ___ remain invisible.
| A．otherwise | B．yet | C．already | D．forever |
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 |
. 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 |
She was afraid that unless the train speeded up she would lose her _____ to Scotland.
| A．ticket | B．place | C．seat | D．connection |