It is usually not quite cold in this area in March, but sometimes temperature ___ be very low.a:should b:can c:must d:shall 答案是b 求详细的解答 谢谢

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It is usually not quite cold in this area in March, but sometimes temperature ___ be very low.a:should  b:can   c:must   d:shall   答案是b  求详细的解答  谢谢

It is usually not quite cold in this area in March, but sometimes temperature ___ be very low.a:should b:can c:must d:shall 答案是b 求详细的解答 谢谢
It is usually not quite cold in this area in March, but sometimes temperature ___ be very low.
a:should b:can c:must d:shall 答案是b 求详细的解答 谢谢

It is usually not quite cold in this area in March, but sometimes temperature ___ be very low.a:should b:can c:must d:shall 答案是b 求详细的解答 谢谢
can有"表推测;能"的意思,在这里理解为:但有时温度也会十分低
should是应该,显然不通,must:一定,太绝对了化;shall将要,也不对
所以是can

B。can情态动词,可能的意思。
should是应该的意思,must是必须的意思。放到句子里翻译不通,所以不选。
shall有可以的意思,大本分用在婉转语气上,表示礼貌的,如:shall we go now?