【题目】The first thing you must remember is that in order to succeed, it is almost compulsory that you ______ optimistic.
A. be B. are C. must be D. have been
在线课程【答案】A
【解析】
试题分析：考查固定句式。It is necessary/ compulsory/important/strange that 主语+(should)+动词原形+其他。句意：你必须记住的第一件事就是为了成功你一定要乐观。故选A。