As a green hand, he doesn’t know______ it takes to start a business here.
| A．when | B．how | C．what | D．which |
A large park ________here now.They hope to finish it in three months.
| A．is built | B．will be built |
| C．has been built | D．is being built |
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 |