I（） up early this morning, so I stayed in bed until 8 o’clock a.m. .
(A)needn’t have got
(B)didn’t need to get
(C)shouldn’t have got
(D)can’t have got
The Correct Answer
The water will be further polluted unless some measures（） .
（A）will be taken （B）are taken （C）were taken （D）had been taken
Correct Answer: B
（）, it was finished in time.
（A）As the work was difficult （B）Difficult as the work was （C）Difficult as was the work （D）As was the work difficult
Correct Answer: B
A teacher should always be thoughtful _______ what's best for his pupils.
（A） in （B） by （C） of （D） at
Correct Answer: C