________ Teacher’s Day is just around the corner．I’ll give my teacher a gift, _____ one that is special and unforgettable．
| A．The; X | B．X; the | C．A; a | D．X; X |
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 |
If I were you,I__________ his offer.
| A．would accept | B．accepted |
| C．will accept | D．can accept |