for a long time but he managed to catch up with his classmates at last.A. Having been il

问题补充：

for a long time, but he managed to catch up with his classmates at last.

A. Having been ill

B. Being ill

C. He was ill

D. Though ill

答案：

A. Having been ill

B. Being ill

(答案→)C. He was ill

D. Though ill

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