The kind-hearted couple decided to adopt the boy ____ parents had been killed in an accident.
| A．of whom | B．with whom | C．on whom | D．in whose |
After spending a wonderful weekend, Jim would have to return to his ________ duties on Monday.
| A．common | B．normal |
| C．regular | D．usual |
Many teachers were impressed by Kris's ________ attitude to life because he never gave up.
| A．positive | B．casual |
| C．careless | D．practical |
If you don't build your dream, someone will hire you to build ________.
| A．it | B．them |
| C．yours | D．theirs |
The basic design of the car is very similar to ________ of the earlier model.
| A．that | B．it |
| C．this | D．one |
The teacher assigned the task to the three boys and ________ did his share.
| A．any | B．all |
| C．every | D．each |