built后面接什么 be

1、He instructed that a wall should be built around the city.他下令在城的周围筑一道城墙。

2、There is widespread concern that new houses will be built on protected land.人们普遍对在保护区修建新的房屋感到忧虑。

3、More nurseries will be built to fill the need for high-quality child care.将建立更多的托儿所以满足高质量儿童保育的需要。