Take an active part in sports or other activities you enjoy ____ you can meet various kinds of people.
| A．what | B．when | C．that | D．where |
If you hadn’t taken such a long time to get dressed，we’d __________there by now.
| A．be | B．circles | C．is circling | D．be circling |
I apologize if I__________you，but I assure you it was unintentional(无意的).
| A．offend | B．had offended |
| C．should have offended | D．might have offended |
I would have gone to visit him in the hospital，had it been at all possible，but I __________fully occupied the whole of last week.
| A．were | B．had been | C．have been | D．was |
There is a real possibility that these animals could be frightened，__________a sudden loud noise.
| A．being there | B．should there be |
| C．there was | D．there having been |
If the horse won today，it__________thirty races in five years.
| A．would have won | B．won |
| C．must have won | D．did have won |