Answer:
valuable is the correct answer
Okay so you just replace certain words in the sentences with the words in the brackets. For example, in the 2nd question you rewrite the sentence as Looking after animals is *far more* time consuming than looking after children. Hope this helps! :D
Answer:
The website address provides clues about the expertise of authors.
Explanation:
I don't know for sure but I think the second one is an intensive pronoun