He often until it is dark. [ ] A.goes on to workB.goes on working C.goes on with
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![He often until it is dark. [ ] A.goes on to workB.goes on working C.goes on with](/pic/43_996275.jpg)
He often ________ until it is dark.
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A.goes on to workB.goes on working C.goes on with workingD.goes with work试题答案
答案:B