【单选题】
All of us think it difficult to ____ the difference between the two things.
【单选题】
Alicereceived an invitation from her boss, ____came as a surprise.?
【单选题】
—What day is today?—Today is____.
【单选题】
This painting is ____ of his work.
【单选题】
____ is essential to a successful scientist; he cannot hope to make any progress if he cannot work in a controlled way.
【单选题】
The airport is five miles ____ my house.
【单选题】
Many a customer____ about the poor quality of the washing machine.
【单选题】
____ by this, he couldn’t say anything.
【单选题】
George is so ____ in debt that he is afraid to show up in the pub in case he meets his six creditors.
【单选题】
Every one was ____that day.