Agriculture officials this week said strict control pressures are in place,___to prevent the red fire ants spreading across the country.

_________ the project as planned, we’ll have to work two more hours a day. 

There are a great number of natural resources in the desert, which remain to be ________.

_______ the right to correct his difficult question，the teacher of English was pleased and praised me in front of the class.

           an important role in a new movie, Andy has a chance to become famous.