no question that, no longer a question whether/ that

[joham]

There is no question that the government knew about the deal.
(This sentence comes from Longman Dictionary. )

Now I ran across a fill-in question:

It is no longer a question ______ (whether, that) man can land on the moon.(The given answer is 'that'.)

I thought 'whether' would be the correct choice. And I searched 'the web' on reference.com, typing in 'It is no longer a question whether' and got 243 results for it. But when I typed in 'It is no longer a question that' I got only 19 results for this phrase. Then which is the right answer?

Could I ask native English teachers to help me? Thank you very much.

[baqarah131]

Somebody goofed.
The given answer is clearly wrong.

regards
edward

Originally Posted by joham

There is no question that the government knew about the deal.
(This sentence comes from Longman Dictionary. )

Now I met a fill-in question:

It is no longer a question ______ (whether, that) man can land on the moon.(The given answer is 'that'.)

I thought 'whether' would be the correct choice. And I searched 'the web' on reference.com, typing in 'It is no longer a question whether' and got 243 results for it. But when I typed in 'It is no longer a question that' I got only 19 results for this phrase. Then which is the right answer?

Could I ask native English teachers to help me? Thank you very much.