__________ fishes are usually more expensive than __________ ones, because it's not easy to keep them __________.
| A．Alive; frozen; live | B．Living; freezing; live |
| C．Live; freezing; living | D．Live; frozen; alive |
Mothers holding jobs outside the home should have ________schedules to make it easier to care for their children.
| A．heavy | B．smooth | C．flexible | D．complex |
The twins were so much alike that we had great trouble ________one from the other.
| A．distinguishing | B．to distinguish |
| C．distinguish | D．distinguished |
Walk faster，________you may catch up with your friends ahead.
| A．or | B．but | C．and | D．yet |
Maybe you have been to many famous restaurants，but nowhere else ________on such nice ducks.
| A．you can feast | B．can you taste |
| C．you can taste | D．can you feast |
During the tenday vacation，they traveled to many parts of France ________their own expense.
| A．on | B．with | C．at | D．in |