_______ that he made an obvious mistake, Jeff went on with his speech.
| A．Not realized | B．Not to realize |
| C．Not to have realized | D．Not realizing |
The story took place in the 1920s, a time ________ jazz became popular in America.
| A．which | B．with which | C．when | D．among which |
.Only a few people were killed in the SARS ,and _____were saved.
| A．the most | B．most of whom | C．majority of them | D．the majority |
Tom was wild with joy _____the result of the exam.
| A．to | B．as | C．at | D．by |
It’s a pity that the great writer dies _____his works unfinished.
| A．for | B．of | C．from | D．with |
Though _____ my opinion ,my mother didn’t say anything to show that she stood by me.
| A．on | B．in | C．for | D．of |