Whether the race will start on time or not has been a matter of speculation for days.

Just how good a job they can do without him has been a subject of speculation.

As a result, a great deal of speculation has been made about who actually wrote the book.

The company became the subject of speculation about being taken over itself at the time.

He seems to think almost every other kind of speculation is.

The list has always been the subject of much media attention and public speculation.

They were the subject of much speculation at the time.

Let me now come back to the issue of financial speculation.

Just why China has kept hands off is a matter of speculation.

A. There's been a lot of speculation in the market about where we're going to head.