The proposal _____ at the meeting now is of great importance to our department. A) being discussed B) to be discussing C) having discussed D) discussing

22. _____ in the company for three years, Mark has become experienced in business negotiations. A) Having worked B) Have been working C) Have worked D) Worked

It is important that we _____ the task ahead of time. A) will fish B) finished C) finish D) shall finish

The total output of this factory (double) _____ since it was put into operation in 2006. 【答案】has doubled查看答案

According to the survey (conduct) _____ recently, 52% of American business people booked their business travel online last year. 【答案】conducted查看答案 【解析】考点：非谓语动词。句意：根据最新的调查显示，去年52%的美国商人在网上预订差旅。句中存在谓语动词booked，因此空格处应为非谓语形式。survey和conduct是逻辑上的被动关系，所以应该填写conduct的过去分词conducted。