He didn‘t seem to mind_____the music while he was studying.
A. them listening
B. them to listen to
C. when she returned
D. that did she return
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It seems as if the sun_____round the earth since it rises in the east and sets in the west.
A. circles
B. is circling
C. has been circling
D. were circling
营业结束时，应将洗净的过滤布置于盛有清水的有盖容器中并冷藏保存（）
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