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Syntax

In the sentences below, indicate the correct syntactic patterns of the phrasal verbs by clicking on the correct abbreviations:

    V = verb
    A = adverb
    O = object
    P = preposition

1. When a space shuttle prepares to blast off, its external fuel tank and its booster rockets are firmly attached.
VA  VAO  VOA  VPO  VAPO
VA: CORRECT.
VAO: INCORRECT.
VOA: INCORRECT.
VPO: INCORRECT.
VAPO: INCORRECT.

2. Inside the shuttle, crew members look forward to the thrill of working in space.
VA  VAO  VOA  VPO  VAPO
VA: INCORRECT.
VAO: INCORRECT.
VOA: INCORRECT.
VPO: INCORRECT.
VAPO: CORRECT.

3. As the main engines rev up and the booster rockets ignite, fire and smoke are everywhere.
VA  VAO  VOA  VPO  VAPO
VA: CORRECT.
VAO: INCORRECT.
VOA: INCORRECT.
VPO: INCORRECT.
VAPO: INCORRECT.

4. Slowly, the shuttle lifts off the earth.
VA  VAO  VOA  VPO  VAPO
VA: INCORRECT.
VAO: INCORRECT.
VOA: INCORRECT.
VPO: CORRECT.
VAPO: INCORRECT.

5. At 28 miles up, the booster rockets use up their fuel.
VA  VAO  VOA  VPO  VAPO
VA: INCORRECT.
VAO: CORRECT.
VOA: INCORRECT.
VPO: INCORRECT.
VAPO: INCORRECT.

6. Then, they fall off and parachute down to the ocean.
VA  VAO  VOA  VPO  VAPO
VA: CORRECT.
VAO: INCORRECT.
VOA: INCORRECT.
VPO: INCORRECT.
VAPO: INCORRECT.

7. At 75 miles high, the external fuel tank drops off and plummets to the ocean below.
VA  VAO  VOA  VPO  VAPO
VA: CORRECT.
VAO: INCORRECT.
VOA: INCORRECT.
VPO: INCORRECT.
VAPO: INCORRECT.

8. During their time in space, astronauts carry out experiments in microgravity.
VA  VAO  VOA  VPO  VAPO
VA: INCORRECT.
VAO: CORRECT.
VOA: INCORRECT.
VPO: INCORRECT.
VAPO: INCORRECT.

9. When, the work in space is finished, the shuttle prepares to head for home.
VA  VAO  VOA  VPO  VAPO
VA: INCORRECT.
VAO: INCORRECT.
VOA: INCORRECT.
VPO: CORRECT.
VAPO: INCORRECT.

10. Before entering Earth's atmosphere, the shuttle must turn around and fire its orbital maneuvering system engines in the opposite direction.
VA  VAO  VOA  VPO  VAPO
VA: CORRECT.
VAO: INCORRECT.
VOA: INCORRECT.
VPO: INCORRECT.
VAPO: INCORRECT.

11. The firing of the orbital maneuvering system engines in the opposite direction helps the shuttle slow down.
VA    VAO  VOA  VPO  VAPO
VA: CORRECT.
VAO: INCORRECT.
VOA: INCORRECT.
VPO: INCORRECT.
VAPO: INCORRECT.

12. For if the shuttle entered the earth's atmosphere too quickly, it would burn up.
VA  VAO  VOA  VPO  VAPO
VA: CORRECT.
VAO: INCORRECT.
VOA: INCORRECT.
VPO: INCORRECT.
VAPO: INCORRECT.

13. At this point, the last of its fuel has run out.
VA  VAO  VOA  VPO  VAPO
VA: CORRECT.
VAO: INCORRECT.
VOA: INCORRECT.
VPO: INCORRECT.
VAPO: INCORRECT.

14. It begins do drop toward the earth with only gravity to propel it and only the earth's atmosphere to slow it down.
VA  VAO  VOA  VPO  VAPO
VA: INCORRECT.
VAO: INCORRECT.
VOA: CORRECT.
VPO: INCORRECT.
VAPO: INCORRECT.

15. At about 2,000 feet from the earth, the shuttle levels off.
VA  VAO  VOA  VPO  VAPO
VA: CORRECT.
VAO: INCORRECT.
VOA: INCORRECT.
VPO: INCORRECT.
VAPO: INCORRECT.

16. Finally, the shuttle touches down and comes to a halt.
VA  VAO  VOA  VPO  VAPO
VA: CORRECT.
VAO: INCORRECT.
VOA: INCORRECT.
VPO: INCORRECT.
VAPO: INCORRECT.