39. Let’s learn to use the problem we are facing _______ a stepping-stone to future success.
| A．to | B．for | C．as | D．By |
Desipt the fact that there was a big ______ over the meeting, it seemed that a good many of the invited guests would still attend it.
| A．controversy | B．comparison | C．agreement | D．contribution |
The letter was______as it was the only one ever signed by the the Queen.
| A．unusual | B．unique | C．rare | D．scarce |
After a long discussion with my family, we've _______blue for the bathroom.
| A．worked on | B．put on | C．taken on | D．decided on |
He can______to get us some tickets; I always trust him.
| A．try | B．attempt | C．manage | D．succeed |
In English colleges, classes are often arranged in freer and opener______and many jobs are designed for students.
| A．grades | B．ranks | C．customs | D．patterns |