Answer:
That piece is really enjoyed by the Choir.
Answer: a. True
Explanation: In any given text, it is important to cite the source of any information. This could come as a signal phrase introducing the cited material or in a parenthesis following it.
This sentence should be written using this tense:
By the time the movie was over, we had left the theater.
You need to use past perfect tense in these kinds of constructions.
