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 _________.

her sleep was __________ by a violent hammering on the door.

after a few weeks, the caterpillar __________ from its cocoon.

it is very ___________ to know that the project was a success.

my boyfriend and i have had our ________ but it's been mostly a wonderful relationship.

the theory was flawed electrically, _______ and energetically.