Sixty people(employ)______in this big factory last year.

A. to stand down the fairway at a golf course
B. to watch over the sugar-cane plantation C. to drive the oxen that ploughed the cane fields
D. to spot the balls as they landed so the golfers could find them

A. glaciers have been melting very gradually
B. the climate has been growing much warmer
C. the snowline has retreated on mountains
D. vegetation has been changing