.— His mother was ill and he had to look after her in hospital. — That’s he was absent fr

问题补充：

.

— His mother was ill and he had to look after her in hospital.

— That’s he was absent from the meeting.

A. because

B. what

C. why

D. which

答案：

A. because

B. what

(答案→)C. why

D. which

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