Answer:
Adverbs of frequency go before the main verb
Explanation:
Adverbs of frequency go after "be": He’s always late. Expressions of frequency (every day, twice a week, once a month etc) usually go at the end of a sentence.
I only see 3 excerpts.....those I can see would be as follows:
1) Society and class
2) humankind and nature
3) evolution
Don't know why the other 2 excerpts don't show up (for me)
the question say Do you think that is to long to travel for a weeklong trip?
the correct word should be DO YOU THINK THAT IS TOO LONG TO TRAVEL FOR A WEEKLONG TRIP?
B. Walking is an easy and safe exercise for beginners