One point of controversy, question 36. The link was bag, the argument is whether Air speed 9since wind is moving air) is a better answer than wind (i.e. airbag not windbag).
Technically airspeed is the speed at which something goes through the air (usually a plane), whereas windspeed is the speed it goes past you. Hence the Beaufort scale is measuring windspeed, airspeed is measured using the good old scale of mph km/h or knots. As to whether there really is such a thing as a windbag, I can confirm that I attend meetings full of windbags especially when there is a train I need to catch.
Handout : 1-20 Handout
Questions 21-50 : Q21-50
Answers : answers