________warm atmosphere in our English class has left________deep impression on all the people present.
–Why, Jack, you look so tired! --Well, I ___the house and I must finish the work tomorrow.
–Well, Randy is not quite ready to make a decision. --So, ___, we have to wait, right?
The Group of Eight(G8) __ the eight richest countries in the world.
The company earned a lot of money. As a result, the members’ personal income rose by a/an __ of 13 percent.
With the help of high technology, more and more new substances ___in the past few years.