18.After you have used the dictionary,please just put it back_________it belongs.
–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.
It was dark. We decided to ___for the night at a farmhouse.