2 Circle the correct words.
1 He was released early after he spent / had spent two years in prison.
2 I failed / had failed the exam because I hadn't worked / didn't work hard enough.
3 By the time we had arrived / arrived, everyone left/ had left.
4 You weren't at the concert last night, weren't you/ were you?
5 He hasn't met Natalia, has he / hasn't he?
