The writer was so ________ in his writing that he forgot to flick the ashes from his cigar.
Without the earth’s atmosphere to protect them, astronauts can be exposed to intense radiation from the sun, ____ them at risk of cancer.
If there were no automatic washing machines, people would have to wash their clothes ______ hand or ______ hand-operated machines.
“No bread eaten by man is so sweet as______ earned by his own labour. ”
_____ the majority of people you will meet when travelling are sure to be friendly, there are dangers-theft being the most common.
Water is the most widely used resource in ______ industry, and plays ______ major role in energy production.