To keep ______ with the rapid changes of society, the old man keeps the habit of reading newspapers every day.
_____by one of his fellow soldiers,the wounded man walked slowly across the field.
Jenny worked hard before the final examination,and it_______.She got an A. A.showed off B.paid offC.put off D.took off
All the things __________ must be done well.
Follow your doctor’s advice,_____ your cough will get worse.
I spent five hours_____________ the book__________ I paid 10 dollars.