alumni association; graduates' association; alumni meeting; class reunion
to be late; to be delayed; to fall behind (in a race, one's studies, etc.); to lag behind; to be bereaved of; to be preceded by (someone) in death
to enter; to come in; to join (a club, company, etc.); to enter (a university, the army, etc.); to be contained (in); to be included (in); to (be able to) fit (in a container, building, etc.)
difficult to ... (physically or emotionally); hard to ...