54. Extensive tests have been on the patient.
| A．carried on | B．carried out | C．carried off | D．carried away |
After a day's exhausting climb we arrived at ________ we had been told was Garden in the Air.
| A．what | B．which |
| C．that | D．where |
The mother, who is strict with her two daughters, has a clear list of ________ they are not permitted to do.
| A．why | B．how |
| C．what | D．which |
Rosa regretted giving her opinion about the decision directly, feeling ________ she should have expressed it differently.
| A．how | B．why |
| C．that | D．if |
You must notice ________ the emergency exit is when you enter the building.
| A．which | B．where |
| C．what | D．in which |
Although he has become wealthy, Mr. Wood remains ________ he used to be, modest and friendly.
| A．when | B．where |
| C．how | D．what |