问题补充:
Mr Smith has cancer for two years but he is still working very hard.
A. suffered
B. suffered from
C. suffered by
D. suffering from
答案:
A. suffered
(答案→)B. suffered from
C. suffered by
D. suffering from
解析:词语辨析。根据时间状语for two years可知要用现在完成时态,排除D;suffer遭受痛苦,损害等;suffer from患某种疾病。句中宾语是cancer,癌症。所以选B。