5 вопросов к предложению He already written this letter today (Общий,специальный, разделительный, альтернативный, к подлежащему).

 He has already written this letter today.

 Has he already written this letter today? (General question)

What has he already written today? (Special question)

When has he already written this letter? (Special question)

Who has already written this letter today? (Special question)

What letter has he already written today? (Special question)

Has he or have we already written this letter today? (Alternative question)

Has he already written or read this letter today? (Alternative question)

Has he already written this or that letter today? (Alternative question)

Has he already written this letter or book today? (Alternative question)

He has already written this letter today, has not he? (Disjunctive question)