The Albertosaurus Mystery (Grammar and Vocab)

Philip ___ searching for fossils in the badlands.

• is

• was

• were

The fossils ___ buried in the badlands.

• are

• were

• is

Philip ___ the bones of the Albertosaurus in New York City.

• finds

• is finding

• found

Philip and his team ___ many fossils from the badlands.

• is uncovering

• were uncovering

• uncover

Philip ___ tired after a long day of searching.

• was

• is

• are

Philip ___ the location of Brown's fossil site after years of searching.

• find

• is finding

• found

Many of the fossils ___ discovered years ago.

• have been

• are

• were

Philip ___ many ideas about why the albertosaurs were buried together.

• have

• is

• had

The fossils ___ studied by scientists all over the world.

• is

• are

• were

Barnum Brown ___ many fossils during his time.

• found

• is finding

• find