The expo will be held in Shanghai, _____a lot of advanced technology will be shown for the first time.
| A．where | B．which | C．when | D．from which |
I paid him ￡50 for the painting, but its true ______ must be at least ￡500.
| A．price | B．money | C．value | D．importance |
----“Did you get _____ to the party?”
----- “Yes, I replied to it this morning.”
| A．an answer | B．an invitation | C．a question | D．a letter |
Were you given a _____, or did you have to do it?
| A．job | B．duty | C．request | D．choice |
— Did you happen to see _______ black and _______ white cat?
— Are they missing? I told you to take care of them.
| A．a; 不填 | B．the; 不填 | C．the; the | D．a; the |
Many people agree that ______ knowledge of English is a must in _______ international trade today.
| A．the, an | B．a, 不填 | C．the, the | D．不填, the |