Question: Sometimes he seems mainly to be having fun--whacking away at everything from Marxism to contemporary political correctness offers him happy sport.
Sometime he seems to be having fun whacking at Marxism and political correctness for sport.

Answer: yes

Question: If we assume that all cost segments other than street delivery vary with volume, the value of scale is about 17 percent of the total cost at the United Kingdom's volume and coverage levels.
Street delivery is one of the cost segments.

Answer: yes

Question: This department has more than 5,500 employees and an annual appropriation of approximately $6.
There are 5500 employees in this department.

Answer:
yes