After the operation, Bill has been doing a lot of physical exercise to build up his _____.
| A．ability | B．strength | C．energy | D．mind |
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 |