______ Stephon Marbury is an American, he has become a role model among Beijing basketball fans.
| A．As |
| B．Although |
| C．When |
| D．Since |
I failed in the final examination last term and only then_____the importance of studies.
| A．I realized | B．I had realized | C．had I realized | D．did I realize |
The old couple have been married for 40 years and never once_____with each other.
| A．they had quarreled | B．they have quarreled |
| C．have they quarreled | D．had they quarreled |
---Did Linda see the traffic accident?
---No, no sooner _____impossible now does seem possible.
| A．had she gone | B．she had gone | C．has she gone | D．she has gone |
Never in my wildest dreams_____these people are living in such poor conditions．
| A．I could imagine | B．could I imagine | C．I couldn’t imagine | D．couldn’t I imagine |
Had I known her name，___________ .
| A．or does she know mine | B．and where does she live |
| C．she would come here | D．I would have invited her |