As they had no children of their own they a child.A. adaptedB. receivedC. adoptedD. provi

问题补充：

As they had no children of their own, they a child.

A. adapted

B. received

C. adopted

D. provided

答案：

A. adapted

B. received

(答案→)C. adopted

D. provided

解析：句意：因为他们没有自己的孩子，他们就收养了一个。A适应B收到，C采纳，收养，D 提供，所以选C。