their work, the students didn't go home. [ ] A.Having not finished B.Not having
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![their work, the students didn't go home. [ ] A.Having not finished B.Not having](/pic/43_760698.jpg)
________ their work, the students didn't go home.
[]A.Having not finished
B.Not having finished
C.Not having been finished
D.Having not been finished
试题答案
答案:B