Present Perfect Tenses

Many explorers have _ to the North Pole

• go

• been

• going

Nobody is here. They have _ to find new species in the rainforest.

• gone

• been

• going

Edmund Hillary and Tenzing Norgay got to the top of Mount Everest _

• since 1953

• almost 60 years ago

• for almost 60 years

Kate has been studying endangered species _.

• for 10 years

• since 10 years

• 10 years

He has been collecting fossils _ he was a student.

• for

• ago

• since

Animal conservation _ more important in the last 100 years.

• became

• has become

Climate change _ many glaciers to melt.

• caused

• has caused

The Giant Panda _ an endangered species for years.

• has been

• was

The puppy _ milk from a bottle for two months.

• has been drinking

• drank

The fisherman _ 50 kilos of fish since yesterday.

• has been catching

• has caught