Some researches have proved that water quality ____ due to too many dams and pumps in some areas.
| A．has been declined | B．is being declined |
| C．is declining | D．had been declining |
________ Tom liked to eat was different from ________.
| A．That…that you had expected | B．What …that you had expected |
| C．That…what you had expected | D．What…what you had expected |
These computers are different from ________.
| A．that we expected | B．what we expected |
| C．which we have expected | D．what we expect |
We were greatly amused by ________.
| A．what you have told us | B．which you had told us |
| C．what you told us | D．that you told us |
________ is to dance.
| A．That interests Mary really | B．Which really interests Mary. |
| C．What really interests Mary | D．What really interest Mary |
________ surprised me most was ________.
| A．That…that she spoke Japanese so well |
| B．What…how could she speak Japanese so well |
| C．What…that she spoke Japanese so well |
| D．That…why she could speak Japanese so well |