It's surprising that he can run so fast.

What is at the bottom of this lake?

What? I couldn't catch what you said.

This math problem requires finding out what the base of the logarithm is.

What is at the bottom of this lake?

Could you bring me that, whatchamacallit?

We went for a picnic to the lake on the weekend.

We had a picnic at the lake over the weekend.

What do you want to eat?

What, is that my pencil?