The overwhelming flood has polluted the water sources of the city and it is now ____ drinkable water.A、in needB、in shortC、short ofD、needed
点击查看答案
—Why does the stream smell terrible? —Because large quantities of water_____.A、have pollutedB、is being pollutedC、has been pollutedD、have been polluted
The boy()to school already.A、has takenB、has been takingC、is takenD、has been taken
All _____ is sheer nonsense. We must find a way out right now.A. what has been saidB. the thingsC. that has been saidD. of has been said
He told me that he ____ in Naples the previous year.A、has been workingB、has workedC、had been workingD、had been worked
“long before the first settlers __________the far west, new england sea captains and merchants had explored the pacific coast and built trading posts.“A. reachedB. reached toC. gotD. got at
We () off the coast of Denmark.A、will be startedB、will be startingC、will have startedD、will have been started
