1. Until recently, the Inuit people led a nomadic existence, sheltering in igloos.
A. Until recently, the Inuit people led a nomadic existence, sheltering
B. Up until recently, the Inuit people, leading a nomadic existence, have sheltered
2. Although improved efficiency in coverting harvested trees into wood products may reduce harvest rates, it will stimulate demand by increasing supply and lowering prices, thereby boosting consumption.
A. in coverting harvested trees into wood products may reduce harvest rates, it will stimulate demand by increasing supply and lowering prices, thereby boosting
B. in converting harvested trees into wood products may reduce harvest rates, demand will be stimulated because of increasing supply and lowering prices, which boost
3. A burst of smoke would appear when the bag influted, and making an already terrified passenger think the car was on fire.
A. influted, and making
B. in flated and make
C. inflated to make
4. Sound can travel through water for enormous distances, prevented from dissipating its acoustic energy as a result of boundaries in the ocean created by water layers of different temperatures.
A. prevented from dissipating its acoustic energy as a result of
B. its acoustic energy prevented from dissipating by
C. preventing its acoustic energy from dissipating by
5. The particular design of muscles and bones in the neck and limbs of the turtle allow that it can draw in its exposed parts such that an attacker can have nothing but hard shell to bite.
A. allow that it can draw in its exposed parts such that
B. allows that it can draw in its exposed parts, and so
C. allows it to draw in its exposed parts, so that |