I03 PRESENT PERFECT SIMPLE AND PRESENT PERFECT CONTINUOUS

Over the last decade, the city (a)   (experience) several hurricanes that have caused significant damage.

The local authorities (a)   (prepare) for the storm all week, and they are still making final arrangements.

Climate scientists (a)   (study) climate change for many years, and their research continues to evolve.

In recent years, global temperatures (a)   (rise) significantly, which is alarming to many environmentalists.

This year, we (a)   (witness) some of the worst floods in history, which have affected thousands of families.

For over a decade, she (a)   (report) on extreme weather events and continues to cover new developments.

Due to the wildfire threat, emergency services (a)   (evacuate) residents from the area and are still assisting those in need.

He (a)   (monitor) the weather patterns closely since last month to provide accurate forecasts; he is still observing changes.

Meteorologists (a)   (predict) more severe storms this season based on recent data, and they are actively updating their forecasts.

Recently, the government (a)   (implement) new policies aimed at combating climate change that are now in effect.