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You can never imagine what great difficulty I have had _________ him to stop smoking.

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treat        to treat      treating      treated  
found    finding    to find    for finding  
persuading    to persuade    persuaded    persuade  
the;a   the;/   the;the   /;a  
difficulty; finding    difficulty; to find    difficult; finding    difficult; found  
treat  to treat  treating  treated  
what a; to carry    how; to carry    what; carrying    how; in carrying  
found    finding    to find    for finding  
treat    to treat    treating    treated  
help  to help  helped  helping  
taken to deal with    taken dealing with    took to deal with    taking dealing with  
How   What   What a   why  
finding    of finding    to find    about finding  
how many funs    fun    what a fun    how much fun  
help    to help    helping    helped  
to find    found    find    finding  
imagine    guess    think    consider  

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