The pen I _____ I_______ is on my desk, right under my nose.
| A．think...lost | B．thought...had lost |
| C．think...had lost | D．thought...have lost |
The key _____ four modernizations lies _____ the science and education.
| A．to, on | B．of, on | C．to, in | D．of, in |
What one thinks and feels is mainly _____ traditions, habits and education.
| A．because of | B．due to | C．since | D．through |
Get in touch with them, for they will be anxious _____ news of your arrival.
| A．at | B．for | C．about | D．to |
I like the climate here _____ the wind blows .
| A．except when | B．except for |
| C．except | D．besides |
They paid their taxes ____ cash.
| A．with | B．by | C．in | D．for |