姉も兄も大学に通っています。

older sister; elder sister

too; also; in addition; as well; (not) either (in a negative sentence); both A and B; A as well as B; neither A nor B (in a negative sentence); even; as much as; as many as; as far as; as long as; no less than; no fewer than; even if; even though; although; in spite of; further; more; again; another; the other

elder brother; older brother

post-secondary education institution, incl. university, college, etc.; former central university of Kyoto (established under the ritsuryo system for the training of government administrators); the Great Learning - one of the Four Books

at (place, time); in; on; during; to (direction, state); toward; into; for (purpose); because of (reason); for; with; by; from; as (i.e. in the role of); per; in; for; a (e.g. "once a month"); and; in addition to; if; although

to go to and from (a place); to go back and forth between; to run between (e.g. bus, train, etc.); to ply between; to go to (school, work, etc.); to attend; to commute; to frequent; to circulate (e.g. blood, electricity); to be communicated (e.g. thought); to resemble