Not until Mary reads her composition the second time ___________the spelling mistake.
| A．did she notice | B．she noticed | C．does she notice | D．she has noticed |
---Thanks a lot for your offer. I found it very helpful.
---____. I’m glad you benefited from it.
| A．All the best | B．No thanks |
| C．It is nothing | D．Very well |
--- Shall I go over to have a chat with you this evening?
--- Nice of you! It is ____ great comfort to keep me ____ company, when I’m alone at home.
| A．a; the | B．/ ; a |
| C．a; / | D．the ; / |
At the age of 29, Dave was a worker, _______ in a small apartment near Boston and ______ what to do about his future.
| A．living; wondering | B．lived; wondering |
| C．lived; wondered | D．living; wondered |
When he ______the door, he found his keys were nowhere.
| A．would open | B．opened |
| C．had opened | D．was to open |
In April, 2009, President Hu inspected the warships in Qingdao,_______the 60th anniversary of the founding of the PLA Navy.
| A．marking | B．marked |
| C．having marked | D．being marked |