My grangpa told me that learning English well a must for us young people in this modern society.
A. will be
B. is
C. was.
D. had been
网友回答
A. will be
(答案→)B. is
C. was.
D. had been
解析：考查主谓一致。句意“我外公告诉我，在当今这个现代社会，学好英语对我们年轻人来说是必须的。”that引导的是宾语从句，动名词作主语，谓语应该用单数。根据this可知用现在时。故选B。