________ it comes to the increasing use of motor vehicles in the cities，some people think it should be limited．
| A．Because | B．Once | C．When | D．While |
These countries ________ too many wars since ancient time.
| A．went through | B．have gone by | C．went by | D．have gone through |
——How about ____New Year party yesterday evening?
—— I think it was _________ success.
| A．a; a | B．the; a | C．a; / | D．the;/ |
——Let’s go and have a good drink tonight.
——__________. Have you got the first prize in the competition?
| A．What for? | B．Thanks a lot. | C．Yes. I’d like to | D．Why not? |
Usually an adult man can grow about 1.7 meters tall, _____ a few may grow as short as 1.3 meters.
| A．while | B．or | C．for | D．so |
The illness of her son is so ______ that she cannot go to sleep at night.
| A．satisfying | B．worrying | C．surprising | D．puzzling |