28.3.7 Exercise 7: Translate these phrases

Exercise 7    
When does he come?
What do you see?
Why do you ask this?
Why doesn't he go to school?
Who knocks on the door?
Whom do you see?
Where does he come from?
From who did you get this money?
From when on can he be visited?
Until when are you going to know it?
To whom did you send the letter?

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