しかしこの本をしまっておきなさい。

however; but

this (something or someone close to the speaker (including the speaker), or ideas expressed by the speaker)

book; volume; script; this; present; main; head; real; regular; counter for long cylindrical things; counter for films, TV shows, etc.; counter for goals, home runs, etc.; counter for telephone calls

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 finish; to stop; to end; to put an end to; to bring to a close; to close (a business, etc.); to close down; to shut down; to shut up; to put away; to put back; to keep; to store; to finish ...; to do ... completely

to do