—What about ____ book?
—It’s too difficult ____ book for beginners.
| A．the; the | B．a; a | C．a; the | D．the; a |
They _________ the plane, or perhaps they have been prevented from coming for some reason.
| A．can have missed | B．can have lost | C．may have missed | D．may have lost |
The universities have got bigger in size, ____ many more people the chance of higher education.
| A．so allowing | B．thus allowing | C．so to allow | D．thus to allow |
--- ______ that he managed to get the information?
--- Oh, a friend of his helped him.
| A． Who was it | B． What it was |
C．How was it | D．Why it was |
In our childhood, we were often ______ by Grandpa to pay attention to our table manners.
| A．demanded | B．reminded | C．allowed | D．hoped |
Words _____ me when I wanted to express my thanks to him for having saved my son from the burning house.
| A．failed | B．left | C．discouraged | D．disappointed |