－Personally，I believe I can do it well on my own.
－________ Selfconfidence is the first secret of success.
| A．It's up to you. | B．Take it easy. |
| C．Let' s get going. | D．I'm with you on that. |
You might just as well tell the manufacturer that male customers _____ not like the design of the furniture.
| A．must | B．shall | C．may | D．need |
We had tried everything to improve their living conditions, but it made little ______.
| A．good | B．use | C．result | D．difference |
However, in ______ recent years, Niagara Falls have come to be appreciated more for their natural beauty as ______ wonder of nature.
| A．不填; a | B．the; the | C．不填; the | D．the; a |
The argument remains extremely heated ______ it is worthwhile for China to open its door to foreign cars.
| A．that | B．which | C．if | D．whether |
It’s been over a year since I ______ back from the countryside.
| A．come | B．came | C．will come | D．had come |