3.B 此题考查短语意思及用法。get down to doing sth.=set out to do sth. 着手做某事;set off 动身;set up 建立。
4.D desire后可跟复合宾语,其补足语用不定式短语。suggest可构成suggest one's doing,suggest that…或It is suggested that…结构,不可构成suggest sb. to do sth.结构; hope可构成hope to do sth.,hope that…或It's hoped that…结构,不可构成hope sb. to do sth.结构。
5.D hold 意为“容纳”,符合句意。
6.A 考查省略句。所填部分作应答句的方式状语,因主从句的主语一致,都是the workers,因此可以将从句的主语和谓语中的助动词、系动词或情态动词省略,而且从句谓语动词tell与主语workers是被动关系,故选A。