用得其所

used properly / used for its intended purpose / to put to good use / to serve its purpose

to use / to employ / to have to / to eat or drink / expense or outlay / usefulness / hence / therefore

to obtain / to get / to gain / to catch (a disease) / proper / suitable / proud / contented / to allow / to permit / ready / finished

structural particle: used after a verb (or adjective as main verb), linking it to following phrase indicating effect, degree, possibility etc

to have to / must / ought to / to need to

his / her / its / their / that / such / it (refers to sth preceding it)

its place / one's appointed place / the place for that

actually / place / classifier for houses, small buildings, institutions etc / that which / particle introducing a relative clause or passive / CL:個|个[ge4]