—What was it that caused the party to be put off?
—________ the invitations.
| A．Because Tom delayed sending |
| B．Tom delayed to send |
| C．That Tom delayed sending |
| D．Tom delayed sending |
We should read such books ____ will make us better and wiser.
| A．when | B．as | C．whose | D．what |
You must show my wife the same respect ____ you show me.
| A．when | B．as | C．whose | D．what |
He is absent ____ is often the case.
| A．what | B．which | C．who | D．as |
It is the first time ____ I have come to your city.
| A．that | B．which | C．what | D．when |
Who ____ has the same idea as it will do it in this way.
| A．who | B．that | C．whom | D．which |