18、I     on my report next week so I won’t be able to meet you any day.

A．a(chǎn)m working        B．will be working       C．was working       D．have been working

17、       a lot of people needed medical help, I decided to be a volunteer worker.

A．Know          B．Known           C．Knowing         D．To know

16、The government announced that six highways      by the end of last year.

A．built                B．had built                  C．have been built               D．had been built

15、Sorry I’m so late, but you cannot imagine       great trouble I took to find your house.

A．what         B．how          C．which             D．why

14、It was after careful consideration        we decided to take action.

A．which           B．that         C．why           D．when

13、---I regret to say that I      have shouted at you the other day.

---Forget it. I was a bit out of control myself.

A．shouldn’t            B．mustn’t           C．couldn’t                D．mightn’t

12、---If you       to my birthday party last Saturday, you would have met our old friend Jim .

---Oh, what a pity!

A．came               B．had come                C．would come                   D．would have come

11、---Why were you absent yesterday?

---I caught a cold,      I had been walking around in the rain.

A．but          B．so         C．a(chǎn)nd           D．for

10、When I couldn’t avoid meeting him, I faced an embarrassing situation       I could only keep silent.

A．who         B．which          C．when         D．where

9、As we know,     Potala Palace, a combination of Tibetan construction art and culture, is considered         precious treasure of China.

A．a(chǎn); a          B．the; a            C．the; the           D．a(chǎn); the