The survey clearly __________ that tourism can have positive benefits.

• contains

• disappears

• demonstrates

• cooperates

The children are grouped according to their ___________.

• population

• habitat

• successful

• ability

The doctors said her condition was critical and she might not _______.

• affect

• survive

• release

• protect

I can't find my keys anywhere - they've completely ___________.

• disappeared

• remained

• swallowed

• contained

Try to avoid foods which ________ a lot of fat.

• affect

• release

• contain

• attach

The ________ of the dinosaurs occurred millions of years ago.

• destruction

• competition

• location

• extinction

The Spanish authorities ________ with the British police in finding the terrorists.

• remained

• cooperated

• contended

• released

• Keeping animals in these conditions is unbelievably _________.

• major

• unique

• cruel

• enemy

The first symptom of the ________ is a very high temperature.

• protection

• behavior

• ability

• disease

Citrus fruits are a _______ source of vitamin C.

• fashionable

• major

• adaptable

• expert