The bridge is closed so we advise you to use a(n) ______ route.
| A．accurate | B．alternative | C．tentative | D．primitive |
He is the most suitable person _______the task.
| A．to finish | B．finishes | C．finished | D．finishing |
_________, the experiment is sure to succeed.
| A．If carefully doing | B．If carefully done |
| C．If it done carefully | D．If it doing carefully |
The cost of buying a house in Beijing is higher than ______in Luoyang。
| A．it | B．one | C．that | D．this |
.There are over 58000 rocky objects in _______space，about 900 of which could fall down onto ______earth。
| A．the；the | B．不填；the | C．the； 不填 | D．不填；不填 |
-----Did you enjoy your trip to the town?
-----_________. We had driven more than 3 hours before we found the right way.
| A．Absolutely | B．Go ahead | C．Not at all | D．Quite a lot |