81.   She was young at the time, and newly married.

82.   Fats are solid at room temperature, and oil is liquid at room temperature.

83.   ...a device which can detect who is more at risk of a heart attack.

84.   At stake is the success or failure of world trade talks.

85.   I am pleased, also, to think I pulled it off.

86.   Jackets are required at the restaurant, but ties are optional.

87.   At first it was just plain surprising.

88.   He seemed to be popular at the club and afterwards, when he had gone, they described him as one of the best.

89.   Even if a piped water supply is safe at its source, it is not always safe by the time it reaches the tap.