（2012辽宁卷）Not until he retired from teaching three years ago having a holiday abroad.
| A． he had considered | B． had he considered |
| C． he considered | D． did he consider |
--- Really? Who will give _________ lecture?
--- Mr．Wang, ________ famous professor from Nanjing University.
| A．the; 不填 | B．a; the | C．the; a | D．a; a |
Not until __________ on TV __________ that the Chinese ship was rescued by the European Union Task Force.
| A．did I turn; did I know | B．did I turn; I knew |
| C．I turned; did I know | D．I turned; I had known |
--- You won’t go to Kathy’s wedding party, will you?
--- No, __________ invited.
| A．though | B．if | C．unless | D．as |
--- Bob, can you spare me a few minutes right now? I have to ask you some questions.
--- ___________．
| A．It’s a pleasure | B．Ask, please | C．Help yourself | D．Yes, go ahead |
--- Daniel must have lost his job in that unemployment crisis, __________he?
--- I don’t think so．Yesterday I saw him working together with his colleagues.
| A．didn’t | B．doesn’t | C．mustn’t | D．hasn’t |