QUES: Give way to buses and taxis at all times

correct the punctuation.

CORRECTED: Give way to buses and taxis at all times.

QUES: For the calculation of the estimated value of construction materials specify their prices

correct the punctuation.

CORRECTED: For the calculation of the estimated value of construction materials, specify their prices.

QUES: Here Marie and Knut Hamsun stayed for 10 months during the years 1909 1910 The Castle was Knut Hamsuns scriptorium

correct the punctuation.

CORRECTED:
Here Marie and Knut Hamsun stayed for 10 months during the years 1909 - 1910. The Castle was Knut Hamsun's scriptorium.