その戸を開けてください。

that (something or someone distant from the speaker, close to the listener; actions of the listener, or ideas expressed or understood by the listener); the; um...; er...; uh...

door (esp. Japanese-style); entrance (to a home); narrows

indicates direct object of action; indicates subject of causative expression; indicates an area traversed; indicates time (period) over which action takes place; indicates point of departure or separation of action; indicates object of desire, like, hate, etc.

to open; to bare; to expose; to stretch

to give; to confer; to bestow; to kindly do for one; to oblige; to favour; to favor