They were very tired,but they went on with their work.(保持原意）They_____working ____they were very tired.
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Theywereverytired,buttheywentonwiththeirwork.(保持原意）They_____working____theywereverytired.Theywerever
They were very tired,but they went on with their work.(保持原意）They_____working ____they were very tired.
They were very tired,but they went on with their work.(保持原意）
They_____working ____they were very tired.
They were very tired,but they went on with their work.(保持原意）They_____working ____they were very tired.
kept.though
they went on working though they were very tired?
they went on working although they were very tired.