Ladies and gentlemen, please remain ________ until the plane has come to a complete stop．
| A．seated | B．seating | C．to seat | D．seat |
The writer is not satisfied with _______ buses are too crowded.
| A．that | B．which |
| C．what | D．the fact 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 |