I dont think i can answer the first few, but i can answer 4. and 5.
For number 4. it is 'The ferocious lion roared at the helpless zebra'
And for number 5. it is 'Study how to brush and shoe horses'
Hope this helps you!
1. What can search the Internet and select elements based on important words? - a browser
An "adaptation" is, by dictionary definition, "a movie, television drama, or stage play that has been adapted from a written work, typically a novel." Answer C, "a musical based on the life of a popular band," meets the definition of an adaptation.
Cacti is the plural form of Cactus.
Hope this helps :)