In crowded places like_____airports and railway stations,you _______ take care of your luggage.
A．canB．mayC．mustD．will
C
must意為“應(yīng)該,必須,一定”,表示出于主觀意識而必須要做某事。根據(jù)所提供的情景“in crowded places like airports and railway stations”可判斷出在擁擠的地方像飛機場和火車站必須看管好自己的行李。can意為“能,會”,用于表示能力。也可表示可能性,意為“(可)能,會得，(偶然,有時)會”。may意為“或許,也許,可能,也說不定”,表示可能性。will構(gòu)成一般將來時,作情態(tài)動詞的意思是“要,希望”,用于表示現(xiàn)在的意志愿望等。
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