Question

—The hall___ for international conferences is of great importance．
—I see, and we are sure to complete it on time．

A．built	B．to be built
C．having been built	D．building

Answer 1

B

解析试题分析：句意：--将要建造的召开国际会议的大厅是非常重要的。 --我明白了，我们一定要确保按时完成。done 被；to be done 将要被；doing 正在进行；having been done 已经被。故选择B。
考点: 考查非谓语动词的用法。