a lot of后面加什么词

　　例句：

　　Art dealers fool a lot of people.

　　艺术品经销商会愚弄许多人。

　　A lot of work is still outstanding.

　　许多工作尚未完成。

　　They asked a lot of probing questions.

　　他们提了许多盘根问底的问题。

　　A lot of companies do in-house training.

　　许多公司都进行内部人员培训。

　　A lot of lost property is never claimed.

　　许多失物从未被认领。