必然 1 Those refugees had no choice but to accept their plight.  (p.100)
I had no choice but to follow my father’s suggestion.

躊躇 2 They couldn’t bring themselves to reveal their true feelings to an outsider.  (p.101)
I couldn’t bring myself to say no to his offer.

役割 3 Trust plays an important part in DDR.  (p.103)
Hospitality plays an important part in hosting the Olympics.

確信 4 Seya is convinced that just having knowledge and skills is not enough to find a solution.  (p.103)
I’m convinced that just learning grammar is not enough to become a good speaker of English.

～次第 5 It is up to the people on the ground to manage their own lives and society.  (p.104)
It’s up to you to decide whether to accept the offer or not.