请说明下列成语用词情况
请在下列四组成语中，找出与“老吾老以及人之老”中第一个“老”的活用情况相同的词，说明它们的含义，并在这些词下面加点：

As soon as
B. As well as
C. As much as
D. As possible as

A. The Royal family had never eaten potatoes before 1619.
B. Potatoes have been the main food of the British.
C. The Irish had lived on the potatoes during the last two centuries.
D. The potato has been an important item of British diet.