1 .  Identify the correct sentence:

• A. The room was darkened by switching off all the lights.
• B. The room was darkened switching off all the lights.
• C. The room was darkened to switch off all the lights.
• D. Switching off all the lights the room was darkened.

Answer: Option A

Explanation:

2 .  Identify the correct sentence:  

• A. Gold is most precious metals.
• B. Gold is one of the most precious metal.
• C. Gold is one of the most precious metals.
• D. Gold is precious than most other metals.

Answer: Option C

Explanation: