Nowadays food safety is a big problem and nobody can guarantee all foods are safe to us, but food produced in the normal companies is____better.
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.