A、  B、  C、  BHow late…?(到多晚)疑问句→回答“until+时间”

When did you last talk to Mr. Green?
(A) I prefer it in red.
(B) The presentation will last about 40 minutes.
(C) Yesterday on the telephone.

How late are you open?
(A)  We’ re open at 9 a. m.
(B)  We’ re open until 10.
(C)  I am already late for the class.