We have a high regard for Mr. Black because he always tries to ________ his principles.
I didn't like aunt Lucy,who __________ without warning and bringing us presents.
You'd better get all the work _________ before you leave.
At midnight the enemy attacked _________.
They had to_________ before they finished the course because they were not well disciplined.
四、Multiple choice(单项选择)15分It looks as if they are going to _________ us a lot of money for the concert hall.