Teens 6 - Unit 10 - Assessment 4

Complete the sentence with one of the given words.

Last week, two girls found the ___ of ancient insects behind their school.

• skeleton

• crocodiles

• footprints

• fossils

• mummy

Complete the sentence with one of the given words.

In Egypt, scientists discovered the ___ of an unknown pharaoh.

• skeleton

• crocodiles

• footprints

• fossils

• mummy

Complete the sentence with one of the given words.

Scientists found most of a mammoth’s ___, but they haven’t found all of the bones yet.

• skeleton

• crocodiles

• footprints

• fossils

• mummy

Complete the sentence with one of the given words.

Millions of years ago, giant ___ swam in this river. These reptiles could weigh about 10 tons.

• skeleton

• crocodiles

• footprints

• fossils

• mummy

Complete the sentences with the verbs given. Use the simple past or the present perfect.

My uncle is a paleontologist who ___ (be) interested in dinosaur fossils since he was young.

• was

• has been

Complete the sentences with the verbs given. Use the simple past or the present perfect.

In 2004, a boy ___ (discover) the bone of a mammoth near his house.

• discovered

• has discovered

Complete the sentences with the verbs given. Use the simple past or the present perfect.

In the past few months, the scientists ___ (find) the leg bones of a giant crocodile.

• found

• have found

Complete the sentences with the verbs given. Use the simple past or the present perfect.

During the late 1990s, a group of researchers ___ (identify) the bones of two mammoths.

• identified

• have identified

Choose the right alternative.

___ the Internet was invented, people have learned a lot more about natural history.

• since

• for

Choose the right alternative.

Amber is a resin that has been fossilized ___ centuries.

• since

• for