21.   He declined to say how many agents had filed appeals, or to give any estimates of the total tax liability involved.

22.   He would not give an estimate of expenditures.

23.   Hirst gave no estimate on when the investigation would be completed.

24.   In their written proposals, the companies have given estimates of what it will cost to make the vaccine.

25.   Indeed, NASA officials no longer give an estimate for a human landing on Mars.

26.   It gave no estimates for the quarter.

27.   It gave no estimate of the loss, but noted it was store policy to leave only merchandise of minimal value in the display cases overnight.

28.   It will give an estimate of how long it should take to complete each project.

29.   NATO officials gave no estimate of their own of the number houses destroyed or people killed.