1. Which of the two boxes contain (more/many/most) pencil - more
2. In water the piece of heavy wood felt much (light/ lighter)- lighter
3. The man told (me) that I should not go out alone at night as (I) might attacked by some wild animal.
1. ... more pencils. (<~~don't forget the 's' to make the plural form)
2. You're correct.
3. ... as I might be attacked ...
1. To determine which box contains more pencils, you would need to count the number of pencils in each box. Start by collecting the two boxes and placing them side by side. Then, one at a time, count the number of pencils in each box. Finally, compare the two totals and determine which box has a greater number of pencils.
2. To determine if the piece of heavy wood feels lighter in water, you would need to conduct an experiment. Begin by weighing the piece of wood outside of water using a scale. Note down the weight. Then, place the piece of wood in water and weigh it again. Compare the weight of the wood in water to the weight outside of water. If the weight is lower in water, you can conclude that the piece of wood feels lighter in water.
3. The sentence structure in your question seems to be incomplete. However, based on the given information, it seems like the man told "me" (the person speaking) that "I" (the person speaking) should not go out alone at night because "I" might be attacked by some wild animal. This implies that the person speaking was warned by someone else about the potential danger of going out alone at night due to the presence of wild animals. Bear in mind that complete and grammatically correct sentences are important for clear communication.