分类：教育/科学-外语学习
问题：请教．谢拉～Ifthelaunchin2005issuccess 
If the launch in 2005 is scessful, China will be the third country _____ its astronauts into Russia and the US. A send  B sends  C sending  D to send是选D么
回答：哎呀，大失误！
忽然想起老师说过的。当句子中间出现序数词时，后面的一定要加to do的形式~~~~不好意思！是选D：）