|19.5.8 Exercise 8: Interrogative adverbs
|When did he arrive?
|When do you do it?
|How much money do you still have?
|Why did he not come?
|How was he able to solve the problem?
|With how many fingers do you type on the keyboard?
|On how many platforms do
|Since how long have you already been here?
|After how long can we see the first results?
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