STRUCTURE SKILLS 15-17

It is at about the age of approximately 18 months_________ children begin to make combinations of two or three words.

• when many

• when are many

• when do many

• when have many of the

In the La Brea tarpits of Los Angeles_________ which have been preserved from the Pleistocene period.

• thousands of animals are

• thousands of animals

• the thousands of animals

• are thousands of animals

Not only ___________ more brittle than hard maples, but they are also less able to withstand high winds.

• soft maples are

• are soft maples

• they are soft maples

• soft maples

The greenhouse effect occurs __________ heat radiating from the sun.

• when does the earth's atmosphere traps

• does the earth's atmosphere trap

• when the earth's atmosphere traps

• the earth's atmosphere traps

Featured at the Henry Ford Museum _________ of antique cars dating from 1865.

• an exhibit is

• an exhibit

• is an exhibit

• which is an exhibit

Only when air and water seep through its outer coat _________.

• does a seed germinate

• to the germination of a seed

• a seed germinates

• for a seed to germinate

In the northern and central parts of the state of Idaho _________ and churning rivers.

• majestic mountains are found

• found majestic mountains

• are found majestic mountains

• finding majestic mountains

Before the Statue of Liberty arrived in the U.S., newspapers invited the public to help determine where ________ placed after its arrival.

• should the statue be

• the statue being

• it should be the statue

• the statue should be

As a protection device, an octopus ejects black or purple ink to cloud the water when ______________ .

• does it escape

• its escape

• it escapes

• escapes it

In __________ several vertically aligned honeycombs with hexagonal wax cells stacked close together.

• a honeybee hive is

• a honeybee hive are

• a honeybee hive of

• a honeybee hive composed of