--- Smoking is bad for your health. ---Yes, I know. But I simply can’t _____.
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.
________ needs further discussion whether we'll build a laboratory or not.