I need a background, for my thunder and lightning essay! HELP! (5th grade).

Walking is not the most exciting form of exercise a person can take on for fitness. yet it is low impact and requires no fancy equipment. that makes walking a simple activity for those new to exercise. walking is less likely than other exercises to cause injury to leg tendons and muscles. all it requires is a good pair of sneakers-no cables, stylish outfits, or weights required. of course, a person could increase the benefit of a workout by adding weights or speed walking. identify the main idea of this paragraph. walking is a difficult and safe exercise for beginners. walking is an easy and safe exercise for beginners. walking is a boring and dangerous form of exercise. walking is an exciting and very effective form of exercise.

Which word in the sentence is a direct object? have you read your brother and sister their favorite books? a. you b. brother c. books d. sister

What is the structure of the following sentence? although i have already visited africa, i would certainly like to return.