Beijing's first unmanned subway trains, which can run ______ without the control of any drivers, are expected to be put into operation next year.
| A．regularly | B．deliberately |
| C．automatically | D．desperately |
My home is two miles_______from here.
| A．distant | B．distance | C．far | D．far away |
——How far apart do they live?
——_____I know, they live in the same neighborhood.
| A．So far | B．As far as | C． As well as | D． By far |
Some kinds of animals can change their color with _______.
A. conditions B environment C. surroundingsD. situation
The headmaster has a particular way of_____her students nervousness when they speak.
| A． breaking down | B．breaking off | C． breaking up | D．breakfing away |
Gathering clouds________the coming storm.
| A． declared | B． turned out | C． appeared | D． announced |