. _______ different kinds of pianos, the workers farther improved their quality.
|
A．To produce |
B．Being produced |
C．Produced |
D．Having produced |
A person _______ a foreign language must be able to use the foreign language _______ all about his own.
|
A．to learn, to forget |
B．learning, to forget |
C．to learn, forgetting |
D．learning, forgetting |
The ground is _______ with _______ leaves.
|
A．covering, falling |
B．covered, falling |
C．covered, fallen |
D．covering, fallen |
The library's study room is full of students _______ for the exam.
|
A．busily prepared |
B．busy preparing |
C．busyly prepare |
D．are busily preparing |
People _______ in the city do not know the pleasure of country life.
|
A．live |
B．to live |
C．lived |
D．living |
The _______ price will save you one dollar for each dozen.
|
A．reduce |
B．reducing |
C．reduced |
D．reduces |
