帽子をくぎに掛ける
看板を掛ける
build a bridge over [across] the river.
put [lean] a ladder up against a wall [the edge of the roof]
cover a table with a tablecloth
ふとんを掛ける
water the flowers.
set the alarm clock for six
play a record.
ひもをかける
wear spectacles.
put somebody under medical treatment