There is a small group of English words which even some native speakers and writers find _____.
| A．puzzled | B．to be puzzled | C．to puzzle | D．puzzling |
It is not profitable to provide bus services in districts where the population is widely _____.
| A．scattered | B．dismissed | C．separated | D．spread |
. In aerospace devices the weight of the necessary power producing equipment is _____.
| A．vital | B．possible | C．capable | D．reliable |
There was a good _____ of the countryside from the front of the bus.
| A．sight | B．view | C．scene | D．scenery |
Circus tigers, although they have been tamed, can _____ attack their trainer.
| A．unexpectedly | B．hopefuuly | C．reluctantly | D．willingly |
The _____ of his clothes indicated too clearly that he had been playing football.
| A．state | B．condition | C．occasion | D．situation |