A vast area north of the Yangtze River ______by the first heavy SNOW of the new year，causing difficulties to the post-festival road transport.
| A．were affected | B．was affected | C．had affected | D．has affected |
It was in 1969 that the American astronaut___on the moon
| A．succeeded to land |
| B．succeeded in landing |
| C．succeeded landing |
| D．succeed in landing |
___,he likes Chinese very much
| A．As he is an American |
| B．An American though he is |
| C．American although he is |
| D．American as he is |
Having a trip abroad is certainly good for the old couple,but it remains___whether they will enjoy it
| A．to see |
| B．to be seen |
| C．seeing |
| D．seen |
This is the only one of the best films__this year
| A．have been shown |
| B．that have been shown |
| C．that has been shown |
| D．which has been shown |
This is one of the best films___this year
| A．that have been shown |
| B．that have shown |
| C．that has been shown |
| D．which has been shown |