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He has    himself to improving the health care of ordinary people ever since he became a doctor.

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occupied  has occupied  had occupied  has been occupying  
A child as he is  Child as he is  Child as is he  A child though he is  
nowhere; must be hiding    nowhere; must be hidden himself    anywhere; hides    everywhere; hides himself  
fell    has fallen    was    has been  
does him    do he    do his    do himself  
has he hidden   had he hidden   was he hidden   has he been hidden  
fell    has fallen    was    has been  
had he hidden  has he hidden   was he hidden  has he been hiding  
A child as he is   Child as he is   Child as is he   A child though he is  
had he hidden    did he hide    has he hidden    was he hidden  
fell    has fallen    was    has been  
had he hidden    has he hidden    was he hidden    has he been hiding


  
he can devote himself to learn    he may devote himself to learning    can he devote himself to learn    can he devote himself to learning  
had hidden    has he hidden    was he hidden    has he been hiding  
doesn't feel himself; have    not feel himself; has    doesn't feel himself; has    not feel himself; have  
had hidden    has he hidden    was he hidden    has he been hiding  
has he hidden   had he hidden   was he hidden   has he been hidden  
few  a few  little  a little  
is tired    has a good time    looks after himself    stays at home by himself  
he has been able    has he been able    was he able    he was able  

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