求一道英语填空题答案麻烦简单说明下原因,The country has already sent up three un

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求一道英语填空题答案
麻烦简单说明下原因,
The country has already sent up three unmanned spacecraft,the most recent______ at the end of last March.
A．has been launched B．having been launched
C．being launched D．to be launched

C 后半句是对前半句的解释说明.作状语.

求一道英语填空题答案麻烦简单说明下原因,The country has already sent up three un The country has already sent up three unmanned spacecraft,th [-A69] The country has already sent up three unmanned spacec 单选题 The country has already sent up three unmanne 按句意所给字母填空1.Our country has sent up many satellites into the 一道英语填空题,请说明原因英语填空一道说明原因一道英语填空题,求原因, 一道英语填空题,求原因英语完形填空一道说明原因新概念英语填空小题1:Many villagers believe that the tree has already He has already been to ( ) every country in the world.