1 It is definite (that/what) she will commence with the presentation tomorrow. 2 It is not certain (whose / which) of the representatives will be sent to one of our important clients. 3 Investors are afraid (that/what) the war on terror will cause stock shares to plummet. 4 They questioned her regarding her skills instead of (if/whether) she had the appropriate experience. 5 (Who/Whoever) has an interest in the position of field manager should send a resume to the main office. 6 It is difficult to know (that/what) to expect on the first day of a job. 7 He was of the opinion (that/which) the marketing team needed a new leader. Identify the noun clause and state its position in each sentence. 8 Suppliers will have to decide when the time is right to make a change. 9 How the company manages to stay afloat with all its debt is a mystery. 10 The motorists were concerned about what roads had been blocked due to the accident. 11. New office chairs are what the receptionists have requested numerous times. 12 The company was founded on the idea that quality service should be provided to everyone. 13 The accountant doesn’t understand why 10 percent of profit must go to pension funds. 14 The fact is that some exports will have to be cut back because of inventory shortages.