I'm afraid this painting is not by Picasso. It's only a copy and so it's _____.
| A．priceless | B．invaluable | C．unworthy | D．worthless |
I don’t know how they manage to______ paying such low salaries.
| A．get away with | B． get back | C．get on | D．get over |
--- I called you last night, but nobody answered the phone.
--- Sorry, ________.
| A．I must be sleep at that moment. | B． I must have slept at that moment. |
| C．I must have been asleep at that moment. | D．I must have fallen asleep at that moment. |
We need to strike a ______ between the needs of the community and the rights of the individual.
| A．silence | B． difference | C．balance | D．weakness |
We ______ while Mr. Evan read the exam results.
| A．held our breath | B． wasted our breath |
| C．caught our breath | D．took our breath |
You may ______ your teachers for help when you have problems.
| A．turn up | B． turn down | C．turn to | D．turn off |