I don't believe we've met before，__________ I must say you do look familiar.
| A．therefore |
| B．although |
| C．since |
| D．unless |
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 |