__( )find out what had happened. ( )
A.Until he woke up did he B.Not until he woke up he C.Until he woke up he D.Not until he woke up did he正确答案D
__( )find out what had happened. ( )
A.Until he woke up did he B.Not until he woke up he C.Until he woke up he D.Not until he woke up did he正确答案D