The ______ spent in unscrewing the rusty bolt left her exhausted.

A．We eat too much and refuse to do physical exercises.
B．High -energy foods are easy to get and technology develops last.
C．High -energy foods arc the main diet and we use technology.
D．High -energy foods are easy to get and we consume less energy.

A．The average waist size for a man is 36 -38in.
B．The average waist size for a woman is 30in.
C．In the mid -Eighties, more than half million under- 16s in the UK are classed as overweight.
D．The obesity pandemic has now spread to South America.