The word Chosing is misspelled against Choosing, which is present continuous of "Choose"
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Choosing has double "oo" is mispronounced as "o"
Remember double 'OO' in between the strings ch & sing which should not be misspelled with single 'O'
Wrong Spelling:  ch-o-sing 
Correct Spelling:  ch-oo-sing 
Find more incorrect spellings of Choosing to spell right way.