Riddle contest prizes to be won

[Evans]

2: a sieve
3: ha HAH, sunglasses!
4: a meteorite, lightining, or a bomb

Here's one:

What is it you have to answer?
But to answer you have to ask?
And to ask you have to speak?
And to speak you have to know,
The answer.

[Mistral]

2. the pool with the two walls is a coconut.
7. they were playing slot machines

Huh? Are you reading the right riddles?
...
Oh, you're reading the first seven riddles I put up, all the way back on the first page. Those were already answered by Borman (2. Coconut) and x-D-x (7. Musicians).

2: a sieve
3: ha HAH, sunglasses!
4: a meteorite, lightining, or a bomb

Correct on 2 and 3, and 4 is very close, so I suppose it'll be given to you (it's thunder, not lightning - the third line is sound rather than light). I suppose that's all of mine, then.