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1 _____ I finished the test, everybody had left

the classroom.

A By B By the time C Last time

2 When I saw her, I knew _____ I her before.

A met B had met C have met

3 By last Thursday, all the tickets ______.

A sell out B sold out C had sold out

4 When we arrived at the concert hall, the opera

singer had already _____ the first aria.

A sung B sing C sang

5 I had never ridden a horse before we_______

to the countryside.

A had moved B moved C move

6 Jim had ________celebrated Thanksgiving before

he moved to the USA.

A never B ever C yet