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---Spacecraft “Discovery” has failed in the course of launch. ----_______? They have been prepar...

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has been launched   having been launched    being launched    to be launched  
has been launched   having been launched   being launched   to be launched  
has it    hasn’t it    doesn’t it    isn’t it  
has been launched   having been launched    being launched    to be launched  
equipped    equipping    to be equipped    having been equipped  
How come  Who says  What for  Why not  
has attracted the attention of the general public.  has been examined by the scientific community.  has received recognition from editors and reviewers.  has been frequently quoted by peer scientists.  
has attracted the attention of the general public  has been examined by the scientific community  has received recognition from editors and reviewers  has been frequently quoted by peer scientists  
has sent    was sent    will send    is sent  
the; a    the; the    a; a    a; the  
Believe  To believe  Believing  Believed  
Believe  To believe  Believing  Believed  
what    which    that    whether  
has been launched    having been launched    being launched    to be launched  
spent    has spent    has taken    take  
How come    When    How    Why not  
created    creating    to create    has created  

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