I really don’t know _______ I put my wallet.
| A．where was it | B．it was where that |
| C．where it was that | D．where was it that |
Their belief is proved by the fact that the death penalty prevents murder.
| A．that | B．which |
| C．what | D．the fact that |
What he said at the meeting referred to _______ he was interested in the project.
| A．that | B．which |
| C．what | D．the fact that |
She must face up to _______ she is no longer young.
| A．that | B．which |
| C．what | D．the fact that |
They knew nothing about ______ he was a thief.
| A．that | B．which |
| C．what | D．the fact that |
We were all worried over _______ you were sick.
| A．that | B．which |
| C．what | D．the fact that |