it's difficult to _____ the difference between butterflies and moths.

she rejected the charge that the story was _______.

they ________ announced the news to the reporters.

a lot of women manage to _______ families and go out to work at the same time.

the organization has had six directors, each with a __________ different management style.

he usually ________ jogging for half an hour before breakfast.

citizens of the eu can travel without __________ within the eu.

safety is the single most important __________ in a car’s design.

_______, people who don't smoke are healthier than people who do.

she was still feeling very sad ________ her father's death.

nobody guessed that such a rare disease would become a/ an _________.