____ most efficient way to understand thousands of new words is to gain ____ good knowledge of basic word information.
He must have lived here for 10 years, ____ he?
___ smoking here will be fined.
"Where is it?" "Where is ____? I don't know what do you mean?"
_____ seen smoking here will be fined.
He was in great need of money, so he___ $8, 000 for his car.