English, 19.05.2021 14:00 katet2965

Complete the sentences with the Present Perfect Simple, the Present Perfect Continuous or the Past Simple of these verbs [begin] [cause] [do] [finish] [increase] [rise] [study] [take]

1.The team of biologists
the effects of pollution on plants for years.

2.The government
measure to limit sea pollution by passing a new law.

3.Overfishingsome species to become extinct over the years.

4.Ecotourismto become popular when i was at university.

5.The use of fossil fuels
the amounts of carbon dioxide in the atmosphere.

6.The scientistresearch
on coral reefs since he left university.

7.Sea levelsgradually in the last 10 years.

8.The journalist
writting an article on the Amazon a month ago.

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Complete the sentences with the Present Perfect Simple, the Present Perfect Continuous or the Past S...

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