the huose could fall down soon if no one__ some quick repair work

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thehuosecouldfalldownsoonifnoone__somequickrepairworkthehuosecouldfalldownsoonifnoone__somequickrepa

the huose could fall down soon if no one__ some quick repair work
the huose could fall down soon if no one__ some quick repair work

the huose could fall down soon if no one__ some quick repair work
do
因为后面的中心词是work

did,虚拟语气,if后面用过去式

does

Do

do

do