This factory produced much dirty water, which resulted in a wide _______ of environmental problems.
| A．branch | B．range |
| C．species | D．wave |
A block of flats are being to make room for a supermarket.
| A．knocked into | B．knocked over | C．knocked off | D．knocked down |
They had their shabby houseand sold it for a big profit.
| A．brought up | B．taken up | C．put up | D．done up |
Next week we’ll pay a visit to the Great Wall, so in our absence pleaseour pet dog.
| A．keep an eye on | B．have an eye for | C．keep an eye out for | D．make eyes at |
In view of all sorts of rumors and guesses, experts carried out some careful and scientific research and the possibility of a second earthquake in this area.
| A．blamed | B．discounted | C．attended | D．charged |
It’s unwise of you not tohis suggestions, for he is an authority in this field.
| A．adapt | B．adore | C．adopt | D．advance |