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 |
The number of people invited ______ fifty, but a number of them ______ absent for different reasons.
| A．were; was | B．was; was | C．was; were | D．were; were |
He asked, “How are you getting along?”
----He asked ______.
| A．how am I getting along | B．how I was getting along |
| C．how are you getting along | D．how was I getting along |
I asked my boss for a month’s holiday and, ______, she agreed.
| A．believing or not | B．that is to say |
| C．believe it or not | D．to believe it or not |
Rescuers are ______ for the safety of the two men trapped in the mine.
| A．grateful | B．concerned | C．extreme | D．frightened |
--- How many times have you been to China?
--- In fact, it is the first time that I ______ here.
| A．was | B．am | C．had been | D．have been |