has been，has，have; kind of problems, kind of problem, kinds of p

has been，has，have; kind of problems, kind of problem, kinds of problems Telecommuting -substituting the computer for the trip to the job -- ______hailed as a solution to all_____related to office work.
【正确答案】：has been；kinds of problems
【题目解析】：has been hailed表示“被誉为”。第二个空中all kinds of problems表示“所有的问题”。