Lehrveranstaltungen teach
teach /ti:t∫/ verb (teaches, teaching; past and past participle taught) 1 [with object] to impart knowledge of or skill in; give instruction in 2 to cause to learn and understand: She teaches physics and mathematics.

Datenkbanken & Webseiten maintain
main·tain /meɪn'teɪn/ verb (maintains, maintaining; past and past participle maintained) 1 to keep in existence 2 to keep in proper and good condition: She maintains several databases and websites.

Kontakt reply
re·ply /rɪ'plaɪ/ verb (replies, replying; past and past participle replied) 1 to make answer in words or writing 2 to respond by some action, performance, etc.: She replies to mailed requests.