• A. Aren't we
• B. have not we
• C. shall we
• D. shouldn't we

Answer: Option C

Explanation:

• A. raise
• B. rise
• C. risen
• D. rose

Answer: Option A

Explanation:

• A. decay
• B. increase
• C. reduce
• D. impediment

Answer: Option B

Explanation:

• A. phenomenon
• B. phanonmanon
• C. phenomemnon
• D. phomena

Answer: Option A

Explanation:

• A. aanoying
• B. having annoyed
• C. being annoying
• D. annoyed

Answer: Option A

Explanation:

• A. Reduces the number of wild animals
• B. Exposes passengers and drivers to radiation
• C. Causes biological disasters
• D. Increases the risk of diseases

Answer: Option D

Explanation:

• A. Is an unmixed blessing
• B. Has caused serious hazards to life
• C. Has produced powerful chemicals
• D. Has benefited highly developed nations

Answer: Option C

Explanation:

• A. Benefits others
• B. Misuses benefits
• C. Benefits from an investment
• D. Derives advantage from something

Answer: Option D

Explanation:

• A. Widespread and short- lived
• B. Not widespread
• C. Responsible for health problems
• D. Limited in their effects

Answer: Option C

Explanation:

• A. Abundance of food
• B. Disturbance in the ecological system
• C. Disturbance in the weather patterns
• D. Water pollution

Answer: Option D

Explanation:

• A. gazed
• B. sighed
• C. glared
• D. stared

Answer: Option C

Explanation:

• A. Over
• B. With
• C. In
• D. Between

Answer: Option D

Explanation:

• A. From
• B. To
• C. Of
• D. Off

Answer: Option A

Explanation:

• A. Of
• B. From
• C. On
• D. About

Answer: Option A

Explanation:

• A. Is perfected
• B. Will perfect
• C. Were perfected
• D. Was perfected

Answer: Option D

Explanation: