单选题 It is necessary that he______.
[A] gives up trying [B] give up trying
[C] would give up trying [D] is going to give up trying

【正确答案】 B

【答案解析】[解析] 本题考查句型It is necessary (suggested，requested，ordered， proposed，important) 后面要加以that引导的虚拟从句，即that+主语+should(可省略)+v(动词原形)。