PRESENT PERFECT SIMPLE | Baamboozle - Baamboozle

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Climate change caused - has caused many glaciers to melt.

has caused

The puppy ... (drink) milk from a bottle for two months.

has been drinking or drank

Animal conservation became - has become more important in the last 100 years.

has become

Nobody is here. They have ... to find new species in the rainforest. (gone - been - going)

gone

The scientists haven´t finished - haven´t been finishing their research yet.

haven´t finished

The fisherman has been catching - has caught 50 kilos of fish since yesterday.

has caught

The Giant Panda has been - was an endangered species for years.

has been

Edmund Hillary and Tenzing Norgay got to the top of Mount Everest ... . (since 1953 - almost 60 years ago - for almost 60 years)

almost 60 years ago

Kate has been studying endangered species ... . (for ten years - since 10 years - ten years)

for ten years

He has been collecting fossils ... he was a student. (for - ago - since)

since

Many explorers have ... to the North Pole. (go - been - going)

been