Question 21:D. people have the ability to buy things online and have them delivered to their homes
Question 22:C. doing other activities and taking breaks is healthy
Question 23:B. Landslide
Question 24:A. protection
Question 25:C. Storm
Question 26:D. necessary
Question 27:D. Experts suggest people avoid staying indoors to escape debris.
Question 28:C. Flooding is a common result of storms in low-lying areas.
Question 29:C. Paragraph 3
Question 30:B. Paragraph 2