should/must表猜测如何区别?

oh, its 1:30 pm.you ____hungry. lets go to the nearest restaurant.
A should be
B shall be
Cwill be
D must be

should/must表猜测如何区别? 是must 还是should? could/might/may/would/must/should have+过去分词 could be /must be/ should be/would be的区别 would,should.must,might的区别 请问是用should 还是must？ “SHOULD”和“MUST”有什么区别？ should 与 must 有何不同? mean,must,should,pick,的音标 can , may , must , should的意思