The old lady had expected to see all her relatives when she was ill in hospital but none

问题补充：

The old lady had expected to see all her relatives when she was ill in hospital, but none came to see her many of her neighbors offered their help．

A. when

B. as

C. because

D. while

答案：

A. when

B. as

C. because

(答案→)D. while

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