…speak…
…speak to sb.…
…speak English…
…talk to each other…
…speak/write German…
…speak broken German…
…speak German/in a whisper…
…speak with one's mouth full…
…speak in favour of/against sth.…
…speak a language fluently…
…speak good/fluent German…
…will you be talking from notes or reading your speech?…
…speak ill of sb.…
