1. linguists warn that conservative attitudes toward loanwords and grammatical changes often hamper efforts to preserve languages. (danger) 2. luck that determines how successful or talented family members are is not always mentioned where talent is concerned but plays part. (doubt) 3. you cannot have thunder without lightning because thunder is the sound of outspreading pressure waves from the sudden of the air along a lightning flash. (heat) 4. having had a career with plenty of ups and occasional downs, the athlete has announced his retirement from professional sport due to an eye injury. (terror) 5. apparently we humans share 98% of our genes with chimpanzees; indeed, they are our closest relative in the animal )

1. Linguists warn that conservative attitudes toward loanwords and grammatical changes often hamper efforts to preserve endangered languages. (DANGER)

2. Luck that determines how successful or talented family members are is not always mentioned where talent is concerned but plays an undoubted part. (DOUBT)

3. You cannot have thunder without lightning because thunder is the sound of outspreading pressure waves from the sudden heating of the air along a lightning flash. (HEAT)

4. Having had a terrific career with plenty of ups and occasional downs, the athlete has announced his retirement from professional sport due to an eye injury. (TERROR)

5. Apparently we humans share 98% of our genes with chimpanzees; indeed, they are our closest relative in the animal kingdom.(KING)