his hair getting gray he has decided to have it dyed. A. AsB. ForC. WithD. Though

问题补充：

his hair getting gray, he has decided to have it dyed.

A. As

B. For

C. With

D. Though

答案：

A. As

B. For

(答案→)C. With

D. Though

解析：题意：因为他的头发变的越来越白，他决定染发。 with 是介词意为“因为(=because of)”。as 和for 虽然也可表示原因，但要接句子。