问题补充：
The reason he gives for not coming is that his mother is ill.
A. for which
B. which
C. why
D. about which
答案：
A. for which
(答案→)B. which
C. why
D. about which
解析：可联系答.案.网客服索取。
如果觉得《The reason he gives for not coming is that his mother is ill.A. for whichB. whichC. whyD.》对你有帮助，请点赞、收藏，并留下你的观点哦！
