98.The cruel slave owner made the slaves _______ long hours without food and rest. A.work; B.working; C.to work; D.worked 答案：A
99．The police _______ looking carefully in the woods to find the missing child. A.is; B.are; C.was; D.being 答案：B
100.It is reported that the new model of the car _______ produced soon. A.is being; B.will be; C.has been; D.was 答案：B