问题补充：
--- Were they late for the play?
--- Not really. As soon as they themselves in their seats in the theater, the curtain .
A. settled; went up
B. settled; was gone up
C. were settled; went up
D. were settling; had gone up
答案：
(答案→)A. settled; went up
B. settled; was gone up
C. were settled; went up
D. were settling; had gone up
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