The Shadow answered his own question almost as soon as he had mentally asked it.

It was one that The Shadow could not yet answer.

In any case, The Shadow did not answer it.

A second later The Shadow answered that important question in the negative.

That was a question which The Shadow could not answer for the present.

The Shadow could have answered the first riddle, had he chosen.

That was another question which The Shadow could answer.

It was a question that The Shadow could not answer.

The Shadow answered the second question first by pushing his hand forward and opening it.

The Shadow - in Harry's room - would answer and receive the information.