The river is said __________ in a fire during the past 10 years.
| A．to have polluted | B．it has been polluted |
| C．to pollute | D．to have been polluted |
—I am wondering if we could go boating on the weekend.
—It _____ a good idea.
| A．sound | B．sounded | C．sounding | D．sounds |
After the new technique was introduced，the factory produced____ in 2001 as the year before．
| A．as twice many machines | B．twice many as machines |
| C．as many machines twice | D．twice as many machines |
—Wow， your house is so big！
—Yes， it’s three times _____ yours.
| A．the size as | B．more than | C．bigger as | D．bigger than |
I’ll probably see you on Sunday；____ ， it will be on Monday.
| A．thus | B．then | C．after all | D．if not |
Yesterday our head teacher made such an ____ speech that we all felt _____.
| A．exciting； exciting | B．excited； excited |
| C．exciting； excited | D．excited； exciting |