Wann?
When?
Warum?
Why?
Was für…?
What sort/type of…?
Was?
What?
Welcher/Welche/Welches?
Which?
Wer?
Who?
Wie lang(e)?
How long?
Wie viel(e)?
How much/many?
Wie?
How?
Wo?
Where?
Wieso?
Why? How come …?
Woher?
Where from?
Wohin?
Where to?
Womit?
What with?