4．in his office work he had no time to attend to his sick daughter.A. Kept engagingB. Kep

问题补充：

4．in his office work, he had no time to attend to his sick daughter.

A. Kept engaging

B. Kept engaged

C. Keeping engaging

D. Keeping engaged

答案：

A. Kept engaging

(答案→)B. Kept engaged

C. Keeping engaging

D. Keeping engaged

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