I realize the dictionary says that the past tense of "shall" is "should," but I should (obligation ) tell you that "shall" is not used in everyday American English. Your sentence B has a present tense meaning. The past tense of "should" is "should have" as in: According to the doctor, what should the postman have done to help him?
New words, one handy idiom, and a 2-minute quiz — delivered to your inbox to keep your streak alive.
Shawn79I realize the dictionary says that the past tense of "shall" is "should,"Hi Shawn79,