The first thing you must remember is that in order to succeed, it is almost compulsory that you ______ optimistic.

A. be B. need to be

C. will be D. shall be

A

【解析】

試題分析：考查虛擬語氣。It be + (體現(xiàn)事物性質(zhì)的)adj. +that-從句, 從句用虛擬語氣 。句意：你必須記住的第一件事是：為了成功, 你必須得樂觀。故A正確。

考點(diǎn)：考查虛擬語氣

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