2.Yes, it must be Friday ...
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it must be friday
今天一定是星期五
以上为机器翻译结果，长、整句建议使用 人工翻译 。
It must be handed in sometime before Friday.
这必须在星期五以前的某个时候交。
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Tom believed that it must be Wednesday or Thursday or even Friday or Saturday, now, and that the search had been given over. He proposed to explore another passage.
汤姆坚信日子到了星期三或是星期四，说不定是星期五、星期六都有可能，现在大伙们一定不再寻找他俩了，他提议重找一条出路。
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