用适当的情态动词填空
问题描述：
用适当的情态动词填空
you （）go and see a doctor at once because you 've got a fever.
the man in the office（）be Mr Black,because he went home just now.
may l go to the cinema,mum?certainly,but you （）be back by 11 o'clock.
who's that woman talking with Ann?l'm not sure.lt（）be her mother.
nobody （）live without air and water.
答
should
can't
must
may
can
不明白请及时追问,/>