at the end of each level, you ________ an exam.

the tribe's traditional way of life is _____ threat.

we're interested _______ the source of these fictitious rumours.

nuclear weapons cause destruction _____ a massive scale.

many plants _______ extinct before they have been catalogueD.

any public _______ of this information would be very damaging to the company.

he showed _____ endurance throughout his illness.

i just wanted to ________ sure you knew where to go.

when you have __________ yourself and made some money, you will be in a position to marry.

heavy drinkers are generally more susceptible to ____ diseases.

he __________ his clothes and got into the shower.