Her position was _____ by election successes and economic recovery. A: established B: uilt C: fortified D: formed

8.The old engineer talked of the difficulty they ＿the tower. A: uilt B: had building C: had built D: uild

The radio says a wild animal zoo is to in our city . A: e building B: uild C: e built D: uilt

To our disappointment, the committee our proposal. A: uilt up B: ought about C: looked up D: turned down

The Great Wall ____during many dynasties. But most of the wall we can see today comes from the Ming Dynasty. A: uild B: was build C: uilt D: was built