Exercise 13. supply suitable active and passive forms in theses sentences using the verbs in brackets. some variations in tenses may be possible. it isn’t clear how far the ozone layer (damage) by aerosol sprays. it may be possible to tell whether the hole over the atlantic (widen) after the area (investigate) by high-flyingplanes. these days, even the most remote places on earth (visit) by tourists. package tours (can/arrange) for almost anywhere, from the himalayas to the amazonian jungle. notices such as (english/speak) and (shoes/repair) are common. we constantly (remind) of the way the world (become) smaller when events taking place in different parts of the globe (flash) on our television screens. if you (involve) in a car accident and someone (hurt), you (have to) report the matter to the police. if only the vehicles (damage), drivers should exchange names and addresses.

It isn’t clear how far the ozone layer (has been damaged) by aerosol sprays. It may be possible to tell whether the hole over the Atlantic (has widened) after the area (was investigated) by high-flying planes.
These days, even the most remote places on earth (are visited) by tourists. Package tours (can be arranged) for almost anywhere, from the Himalayas to the Amazonian Jungle.
Notices such as (English Spoken) and (Shoes Repaired) are common.
We are constantly (reminded) of the way the world (has become) smaller when events taking place in different parts of the globe (are flashed) on our television screens.
If you (are involved) in a car accident and someone (is hurt), you (have to) report the matter to the police. If only the vehicles (are damaged), drivers should exchange names and addresses.